I have the Sig 1/5, koverall and latex paint. I also have a Magnum 4s 70 so as to turn a scale sized prop. It is way overpowered, and if you put a 70 4s in yours, you need to take a blood oath not to open the throttle all the way, and to fly it scale like. I've been trying to fly mine scale like, and it ain't easy. The full scale plane does not rock the wings constantly and doesn't squirm from engine torque when increasing the throttle setting. The idea of expo on a Cub is ridiculous, but it does help tame the ailerons. Trimming for flight is like the full scale: once it's trimmed, if you change the throttle, it needs to be retrimmed. Darn! So much more work than a regular ol' sport plane. Guess I better get rid of it. If you don't fly it scale like, the Cub Police will smash down your door and take you away where you will be sentenced to hover something for the rest of eternity.
Good luck.