Simple modification of a free Wordpress-Plugin

Hey guys! I wanna show only the first 5 (or whatever number I set) comments in Wordpress. The rest should be loaded from the server by a click (important, because they shouldn't be just hidden through CSS etc.). I know that's a pagination-function in Wordpress in the settings, but that's not what I want for different reasons. The good news: There's already a plugin, which does that! It's called "Lazy Load for Comments". There are two things I need here: 1.) The mentioned plugin hides ALL comments by default. But I wanna show for example 5 comments by default and only the rest should be loaded on click. 2.) The plugin has other functions I don't need. Because I like dont' t like to install a new plugin for every small functions I'd need you to strip out all the unessary code, so it does only the mentioned function. I'd prefer it to be just a PHP-code, which I put in my funtions.php. 3.) The "Load More"-button should have a CSS-class so I can style it. You'll get a staging-environent from me including the login, where you can test it. Please include "IREADTHEDESCRIPTION" in your application, so I know that you've read this text. Thank you, Martin