I had that combo for a while, very nice airplane, great engine.
Use strong high torque servos. I stripped a standard Futaba aileron servo and it jammed in full up position and I lost the plane, The engine servived.

I used nothing but Powermaster 5%, the instructions say up to 10% is OK and 15% only in cold weather. My prop was a mezlick 19x7 but I fly at sea level.
My other Moki 2.10 is in a Byron's Pitts and I just picked up a nib Moki 3.60 inline twin at a swap meet last saturday for that future big war bird project.