I have the same boat. The setup is as follows:
Motor: FDM SS-1
Drivetrain: FDM gearbox at 1.38:1 ratio. Turbo strut, seperate rudder, with turn fin and trim tabs. I am currently using an Octura 447 prop.
ESC: Astro 212
Batts: 16 GP 3300
This is a very fast setup and takes a a little adjustment to get it going. I love it !
It would be a good idea to call Chris Fine and talk to him about your goal with this boat. He likes dealing with people over the phone so be prepared to talk a while...hehe.
Good luck with whatever setup you choose. jollyroger