Ditto on the P90. I flew mine with a saito 120. Loved it. I had ailerons on both wings with control rods connecting bottom to top wings, dual servos on the bottom wings. Top wing needed -1.5deg incedence, bottom wing at 0deg. I would suggest a +1.5deg incedence on the stab. Otherwise it will fly hands off with about 1/4" down elevator trim. I've seen two do this. What a great flying bipe, wide flight envelope with slow to moderate speed, and beautiful slow speed aerobatics. It would hang like a kite in a good 10pmh breeze. Lost mine on a low inverted flight that took an uncommanded full up elevator. 50' long debre field. Need to build another when time permits.
Edwin