wordpress ninja optimization tasks

i need wordpress ninja to do following task [login to view URL] 1. This site is loading a lot of unused js and css from avada template i am not using just for load things like menu. i would like to remove those unused css for improve page loading 2. frontpage loads all offers. I would like just load 6 random offers. I guess this will improve also speed site catalog [login to view URL] 3. site is loading all cars from inventory. I would like to load only about 15 cars per page and add a load more button like [login to view URL] Exactly as this image [login to view URL] the search module should keep working after this implementation and show results accordling after selection. 4. the image of inventory is too big. I would like that image loaded be a version which is already created about 800px. 5. i would like to scroll image right/left on inventory list. up to 4 or 5 images. i would like work like [login to view URL] with read more button 6. i would like to solve css /js combination and minification issues on site. 7. when you enter to a listing sometimes the gallery 8. i would like to put a better loading gallery like carmax [login to view URL] 9. check how website first page my load faster. is is required to disable multilanguage i can do it. 10. any optimization for make site work faster in mobile 11. exist a function from litespeed cache called instant click. however when i enable it the site sometimes becomes broken. i would like to adjust those things for make instant lcick works. 12. any other optimization for site for increase speed