Aileron Servos
Build the 40 with a servo for each aileron.
I agree about getting the fuselage straight. Don't use CA so that you have time to move it around. I used the method of marking a line on the center of each former (at the bottom) and then lining the centerlines with a line drawn down your building board.
Mine is a Tigger 60. It's orange with black stripes and Tigger is the pilot. Kids love it! Its about 10 years old and still flies great. It's got a Saito 80 in it. It is the best landing airplane I've ever flown.