Kindle Fire 6' (Gen6) - Question about lucky patcher

So I wanted to know if there are any similar apps like lucky patcher for a kindle... I tried to use lucky patcher on a game from amazon Appstore just to see if it worked which it doesn't because every time you load the game it says Error from amazon Appstore and closes it out but before the game closes I can clearly see it modded successfully it just the game won't stay open because of that error but back to the point are there any similar apps like that

if not could I root my kindle with kingroot or will I have to get the fire 5OS preview and downgrade my kindle from there using adb? After that my kindle rooted all I would have to do is download google play services and the google play store and lucky patcher should work right?

Some insight would be most appreciated.

PS. My kindle automatically updated itself with version 4.5.5 at 11:46AM EST. ( If that concerns one of you.)