While I like the idea of you building something scale... from what I see you are building and flying you might like a ULTRA SPORT.... They fly great, I think a bit cleaner than your current planes. I never liked the size or shape of an Ultra Sport canopy however, you could make it like an open cockpit plane however ...it wouldn't change much in the performance area. I built one years ago for a friend, I made a tiny streamlined cockpit back by the rudder. It was VERY sleek looking and flew great.