Hyper ST Pro Brushless project?

[Mystro]

Here is what i have come up with:

Hyper ST Pro Kit: $300.00 from Amain Hobbies
Motor mount: $45.00 from Rc-Monster
Medusa 36-70-2000 Motor: $123.00 from Rc-Monster
4S 5000mah Zippy Lipo: $63.00 from Hobby City
Radio System(Or a Spektrum radio system off ebay): $180.00 from Amain Hobbies
Pinions(what size and pitch): $?? From ??
Novak Fan: $15.00 from Amain Hobbies
CC Bec: $22.00 from Amain Hobbies
Mamba Max Esc: Already own

Please edit that list with what would work better and advice is welcomed :)

Thanks