RE: Mach Racer ARF build
If I were you , I would buy a foam wing and do a few practice flights with the EP wing. Wings do not fly like any other type of plane. They don't have tails to correct the flight path and with the ailerons working in conjunction with the elevator due to the elevon mix, flying could get hairy. I practiced using a MINI BEE wing made from EPP foam which can put up with numerous crashes while learning. GL