RE: Aero bird elect. system and radio,to use with which airplane kit?
Any model that uses a V tail or elevons could be flown with the aerobird Challenger guts. If you keep it to a plane that uses a speed 400 or smaller motor you should be fine, but the Aerobird motor would fly them as well.
Most flying wings can be flown with an elevon/speed 370 combo. That might be a good set-up.