Huh. Well I figured you were beyond the point of expecting to find one part that offered the complete solution. The only shortcoming I saw with this RA gearbox was the HP rating. Smaller shafts and connections can be adapted with some ingenuity.
For what it's worth, I recommend thin wood, it's lighter and more aerodynamic. And remember, every nail adds an ounce of weight. Thumbs up on the wheel choice, good for drifting, which is what everyone longs to do. You could call it "The Wood-Drifter". Get it?