使用しているjqueryでリンク範囲をボタン全体にしたい

お世話になります。

レスポンシブなナビを作成中で、下記jquery（stellarnav）を使用しているのですが、
スマホ時、下階層の+アイコン限定ではなく、ボタン全体にリンクを貼りたいのですが、
どこを触ればよいでしょうか？
文字数オーバーしてしまうので、htmlは省略しています（デモでご覧いただければ）

デモはこちら
http://vinnymoreira.com/stellarnav-js-demo/

/* mobile nav */
.stellarnav .menu-toggle { color: #777; padding: 15px; }
.stellarnav.mobile { position: static; }
.stellarnav.mobile.fixed { position: static; }
.stellarnav.mobile ul { position: relative; display: none; }
.stellarnav.mobile.active { padding-bottom: 0; }
.stellarnav.mobile.active > ul { display: block; }
.stellarnav.mobile ul { text-align: left; }
.stellarnav.mobile > ul > li { display: block; }
.stellarnav.mobile > ul > li > a { padding: 15px; }
.stellarnav.mobile ul { background: rgba(221, 221, 221, 1); }
.stellarnav.mobile ul ul { position: relative; opacity: 1; visibility: visible; width: auto; display: none; -moz-transition: none; -webkit-transition: none; -o-transition: color 0 ease-in; transition: none; }
.stellarnav.mobile ul ul ul { left: auto; top: auto; }
.stellarnav.mobile li.drop-left ul ul { right: auto; }
.stellarnav.mobile li a { border-bottom: 1px solid rgba(255, 255, 255, .15); }
.stellarnav.mobile li.has-sub a { padding-right: 50px; }
.stellarnav.mobile.light li a { border-bottom: 1px solid rgba(0, 0, 0, .15); }
.stellarnav.mobile li a.dd-toggle { border: 0; } 
.stellarnav.mobile.light li a.dd-toggle { border: 0; }
.stellarnav.mobile .menu-toggle, .stellarnav.mobile .dd-toggle, .stellarnav.mobile .close-menu  { display: block; }
.stellarnav.mobile li.call-btn-mobile { border-right: 1px solid rgba(255, 255, 255, .1); box-sizing: border-box; }
.stellarnav.mobile li.call-btn-mobile, .stellarnav.mobile li.call-btn-location { display: inline-block; width: 50%; text-transform: uppercase; text-align: center; }
.stellarnav.mobile li.call-btn-mobile.full, .stellarnav.mobile li.call-btn-location.full { display: block; width: 100%; text-transform: uppercase; border-right: 0; text-align: left; }
.stellarnav.mobile li.call-btn-mobile i, .stellarnav.mobile li.call-btn-location i { margin-right: 5px; }
.stellarnav.mobile.light ul { background: rgba(255, 255, 255, 1); }
.stellarnav.mobile.dark ul { background: rgba(0, 0, 0, 1); }
.stellarnav.mobile.dark ul ul { background: rgba(255, 255, 255, .08); }
.stellarnav.mobile.light li.call-btn-mobile { border-right: 1px solid rgba(0, 0, 0, .1); }
.stellarnav.mobile.top { position: absolute; width: 100%; top: 0; left: 0; z-index: 9999; }
.stellarnav.mobile li.has-sub > a:after, .stellarnav.mobile li li.has-sub > a:after, .stellarnav.mobile li.drop-left li.has-sub > a:after { display: none; }
/* mobile nav */

(function($) {
    $.fn.stellarNav = function(options, width, breakpoint) {

        var $nav, $width, $breakpoint;
        nav = $(this);
        width = $(window).width();

        // default settings
        var settings = $.extend( {
            theme     : 'plain', // adds default color to nav. (light, dark)
            breakpoint: 768, // number in pixels to determine when the nav should turn mobile friendly
            phoneBtn: false, // adds a click-to-call phone link to the top of menu - i.e.: "18009084500"
                locationBtn: false, // adds a location link to the top of menu - i.e.: "/location/", "http://site.com/contact-us/"
            sticky     : false, // makes nav sticky on scroll (desktop only)
            position: 'static', // 'static' or 'top' - when set to 'top', this forces the mobile nav to be placed absolutely on the very top of page 
            showArrows: true, // shows dropdown arrows next to the items that have sub menus
            closeBtn     : false, // adds a close button to the end of nav
            scrollbarFix: false // fixes horizontal scrollbar issue on very long navs
        }, options );

        return this.each( function() {

            // defines black or white themes
            if (settings.theme == 'light' || settings.theme == 'dark') {
                nav.addClass(settings.theme);
            }

            if (settings.breakpoint) {
                breakpoint = settings.breakpoint;
            }

            // adds a location page link to the beginning of nav
            if (settings.locationBtn) {

                if(!settings.phoneBtn) {
                    var cssClass = 'full';
                } else {
                    var cssClass = '';
                }

                var btn = '<li class="call-btn-location ' + cssClass + '"><a href="'+ settings.locationBtn +'"><i class="fa fa-map-marker"></i> Location</a></li>';
                nav.find('ul:first').prepend(btn);

            }

            // adds a click-to-call link to the beginning of nav
            if (settings.phoneBtn) {

                if(!settings.locationBtn) {
                    var cssClass = 'full';
                } else {
                    var cssClass = '';
                }

                var btn = '<li class="call-btn-mobile ' + cssClass + '"><a href="tel:'+ settings.phoneBtn +'"><i class="fa fa-phone"></i> Call us</a></li>';
                nav.find('ul:first').prepend(btn);

            }

            // Makes nav sticky on scroll
            if (settings.sticky) {
                navPos = nav.offset().top;            
                if(width >= breakpoint) {
                    $(window).bind('scroll', function() {
                         if ($(window).scrollTop() > navPos) {
                             nav.addClass('fixed');
                         }
                         else {
                             nav.removeClass('fixed');
                         }
                    });
                }
            }

            if (settings.position == 'top') {
                nav.addClass('top');
            }

            if (!settings.showArrows) {
                nav.addClass('hide-arrows');
            }

            if (settings.closeBtn) {
                // adds a link to end of nav to close it
                nav.find('ul:first').append('<li><a href="#" class="close-menu"><i class="fa fa-close"></i> Close Menu</a></li>');
            }

            if (settings.scrollbarFix) {
                $('body').addClass('stellarnav-noscroll-x');
            }

            // adds the toggle button to open and close nav 
            nav.prepend('<a href="#" class="menu-toggle"><i class="fa fa-bars"></i> Menu</a>');

            // opens and closes menu            
            $('.menu-toggle').on('click', function(e) {
                e.preventDefault();
                nav.find('ul:first').stop(true, true).slideToggle(250);
                nav.toggleClass('active');
            });

            // actives the close button
            $('.close-menu').click(function() {
                nav.find('ul:first').stop(true, true).slideUp(250).toggleClass('active');
                nav.removeClass('active');
            });


            // adds toggle button to li items that have children
            nav.find('li a').each(function() {
                if ($(this).next().length > 0) {
                    $(this).parent('li').addClass('has-sub').append('<a class="dd-toggle" href="#"><i class="fa fa-plus"></i></a>');
                }
            });

            // expands the dropdown menu on each click 
            nav.find('li .dd-toggle').on('click', function(e) {
                e.preventDefault();
                //$(this).parent('li').toggleClass('hover');
                $(this).parent('li').children('ul').stop(true, true).slideToggle(250);
                $(this).parent('li').toggleClass('open');
            });

            var resetTriggers = function() {
                nav.find('li').unbind('mouseenter');
                nav.find('li').unbind('mouseleave');
            }

            var setTriggers = function() {
                nav.find('li').on('mouseenter', function(){
                    $(this).addClass('hover');
                    $(this).children('ul').stop(true, true).slideDown(250);
                });
                nav.find('li').on('mouseleave', function(){
                    $(this).removeClass('hover');
                    $(this).children('ul').stop(true, true).slideUp(250);
                });
            }
            windowCheck();

            // check browser width in real-time
            function windowCheck() {
                var browserWidth = window.outerWidth;

                if(browserWidth <= breakpoint) {
                    // mobile/tablet nav

                    resetTriggers();
                    nav.addClass('mobile');
                    nav.removeClass('desktop');

                    // closes the menu when resizing window back to desktop
                    if( !nav.hasClass('active') && nav.find('ul:first').is(':visible') ) {
                        //nav.addClass('active');
                        nav.find('ul:first').hide();
                    }

                } else {
                    // desktop nav
                    nav.addClass('desktop');                    
                    nav.removeClass('mobile');

                    if(nav.hasClass('active')) {
                        nav.removeClass('active');
                    }

                    // ensures stellarnav is visible after resizing window
                    if( !nav.hasClass('active') && nav.find('ul:first').is(':hidden') ) {
                        nav.find('ul:first').show();
                    }

                    // hides items that were open on mobile
                    $('li.open').removeClass('open').find('ul:visible').hide();

                    resetTriggers();
                    setTriggers();
                }
            }

            $(window).on('resize', function() {
                windowCheck();
            });
        });
    }
}(jQuery));