If you can keep the weight down it should fly fine. I had an own design 540 square inch, 48 oz airplane with a Fox stunt 35, which I thought flew wonderful. I built a second one, got the weight down to 42 oz, and realized that the first one was a lead sled, so to speak. I still competed with the first one on windy days, as the second one was not a good wind airplane. Your engine is probably more powerful than a Fox stunt 35.