Ive got some big mabuchi's laying around, But I think theire a little on the large. Theire rated as battery drill motors. I dont have much interesting motors left, just a speed400 from my airplane hobby. Id say I want to spend around 30 or 40 bucks on a motor. No brushless anytime soon anyway, that would cost a fortune because it eats cells and needs a honking ESC to run it. Ive got a 75amp cont. esc that runs up to 12v, that id like to use on this.

Just dont forget, It doesnt have to go lethal speeds right away. Im only a beginner. If it turns out I get hooked, I can always dub it up with some big cash, right?

And 22" would do perty well. Ive already got a 21" conversion boat, so I know what size I can expect.

As for charger, it maxes out at 5amp 14cells for NiCD/NiMH, 5amp 5 cells for lipo, 5amp 12v for Pb lead acid.