Thanks guys. I was actually thinking of 3 or 4 servos. I think this plane standard uses 1 aileron servo. But I am assuming the control rods would be inside the fuse with the wings on (based on what I remember of my PT40).

I was thinking if splitting the ailerons and using a servo for each aileron and each flap. If I can put the flaps on the outer portion of the wing, then I could have 1 aileron servo inside the wings and 2 flap servos, if not one per aileron and 1 per flap.

But I also thought that flaps go closer to the fuse, so I am most likely looking at the 4 servo setup.

Is my thinking correct here?

Also, would the ailerons, once split in about half to make the flaps, have enough area to be effective?