Today I'm going to start building my Sig Mid Star 40 powered by a TT Pro 46. I'm thinking of modifying a couple things on it already and I want to get your thoughts.

The first thing is, I don't want the exhaust going directly onto the wing. Should I: 1) get a tuned pipe or muffler to get the exhaust beyond the leading edge of the wing, or 2) mount the engine 90 degree's off to put the exhaust beneath the plane?

The second thing is the wingtip's. Should I keep them as the are or get rid of them? What purpose do they serve?

The third thing is the ailerons. I have an extra servo and I was wondering if it's worth the extra weight to get rid of the torque rods. I will be building the plane as a taildragger so I won't have the weight of the nosewheel.