If you go with JR, a JR 4721 or even 4131 , is coreless, reasonably fast, and has great torque, so that one servo with a split pushrod is more than enough on this airplane. Built my first one with a Moki 1.5, and my new one with a T. Tiger 120. They are a little pricey, but no more expensive than using two cheaper servos. Oh....and the centering is superb, something you will really need in contest flying.

Clair