As far as the wing span on this plane I had read a few threads on the big sudo and they seemed to think it flew better with a little shorter wing.I have just left the wing tips off so if I need to I could always add later.I have also changed the elevator setup to have balanced tips on it.I think everything is going to work out well. Our next project will be the 160 powered knife{that Pete will call the butcher knife}CANT WAIT!!!!!!!!!!!!!