Okay, actually, I do the same stuff at real life.
Gotta say you have huge progress with tricking.
So, how old are you?
Thing is, that if you're over 18, your muscles are completely formed up, that's why it's a lot easier to jump for a person like you. I can do only a 540 kick, b-kick, b-twist(but still working on it.), a feilong, aerial, side flip and a front flip.
Going to start doing a backflip soon...
But I'm training this more than 3 months, and I have some weight, that I should lose, but it's quite hard from me, cause it's from my elders.
By the way, about the Cheat 900 attempt, good try, but try going lower before the jump. (It'll give you extra speed.)
All in all, great work, keep up the progress, and train out your front flip, needs some work out.