Wow!! thanks for your help! I'm gonna use the 2200kv first then. I bought it with the funjet, the stock motor is 1800kv. I also got a 25-30A ESC so this should be a good setup. Your results confirmed that. I'll try out this drive calc.

With the second setup with 6x4 prop, it has more thrust.... shouldn't it mean it'll be faster than the 4.75x4.75? Somehow it's not.

So basically, when i find a combo that works, I first off have to know the peak effeciency of the motor and then come up with a drive efficiency that is close to it? Again, that's for all your help!