I believe any size nitro engine would beat that plane to death. I have that plane and it is built extremely light and fragile. I wont be buying another one. Flies good though.
I would stay away from the park480 size planes for glow conversions. They are usually built way to light to handle glow engines. Stick to the 10 to 30 size electrics and you might have better luck.
just my thought on it though...good luck!