meteor template content fully loaded callback

I've a template like below

<template name="mainEvents">
    <section class="main-events-list events-list js-content-slider">
        {{#each events}}
            <div class="events-list-item">
                <figcaption>
                    <dl class="clearfix">
                        <dt>
                        <h3>{{name}}</h3></dt>
                    </dl>
                </figcaption>
                <figure class="ratioBox">
                    <div class="js-backstretch content"><img src="{{image}}"/></div>
                </figure>
                <a href="" class="full-link"></a>
            </div>
        {{/each}}
    </section>
</template>

a simple helper like below

Template.mainEvents.helpers({
   "events": function () {
       return Events.find({is_deleted:false})
   }
})

and lastly a simple iron-route like below:

Router.route('/slider', {
name: 'mainEn',
path: '/slider',
template: 'slider',
layoutTemplate: 'mainLayout',
yieldRegions: {
    'indexHeader': {to: 'header'},
    'footer': {to: 'footer'}
},
onBeforeAction: function () {
    //TAPi18n.setLanguage('en'); // set to english
    this.next();
},
action: function () {
    // render all templates and regions for this route
    this.render();
}
});

As you can guess i'm trying to generate a slider with the data came from the collection and trying to do it with Slick package.

Template.mainEvents.rendered .. function works well when roaming between routes. Suppose my slider is in /slider route and i load the meteor app by entering localhost:3000 and then click /slider button. everything works as it's should.

But when try to load the page with localhost:3000/slider route. rendered function triggers before the content fully loaded and slick fails. I manage to work it only by setTimeout function.

How can i get the all content in a template fully loaded and rendered callback in meteor ?

I need $('.selector').load(function () {}) like function.

or any other that can solve this issue.

Thanks in advance.