I think you should stick to the tiniest servos, like Hitec 50 or 55's. It would run on anything from a Cox .010 to an 049, depending on how low you keep the weight. An 049 would need a throttle if i was flying

If it was my plane, I would put a 300 motor and turn a 3:1 7" prop with 700 MAh AAA NiMH 7 cell. And a 10A or better ESC too. It would climb just fine, realistically too. At 32 span the area is probably around 150-200 sq in and might weigh 10-12 oz. Wing loadings would be from 7 to 12 oz/sf. I would drop the battery to less than 500 MAh if I wasnt happy with 12 oz/sf performance.

If I had a throttled 010, I would use 4.8v 700 MAh AAA NiMH reciever battery or lighter and keep the weight way low. I would guess you could hold it to below 7 oz and have a GREAT flyer.