4 channel would be a normal setup like that. Ailerons on one, with a Y harness. The rudder and wheel on the same with two push rods on the same servos. Rudder and elevator on their own. But, A six channel radio would be a better option, as you can grow into it with future planes that need flaps and retracts. Also, look into one with multiple model memories. As for a Futaba radio I don't know, as I use JR. Somebody else will chime in shortly.