Either engine would work fine. I'm flying a diablo top FG with a Saito 100.
Hopefully yours won't come all bent up. Mine had 3/8" warp in the horizontal stab, 1/4" warp in each elevator half, and about 1/8 to 3/16 warp in each aileron.
Mine weighs 7 lb even with the wood motor mount, micro servos, and NiMH battery. It flies incredibly precisely, all things considered.