It will be fast with the 1.00 but with the right prop I think it will be fine, I've seen them powered with 1.20 four strokes and dle 20cc's as well, overpowered of course but still great flyers. Dean, as far as your ground loop issue, did you check the alignment of the main gear? I've had a Saito 82 on mine and now an OS 91 4 stroke and have never had it to ground loop. I tend to get a little carried away when I set up and adjust an airplane and most times going as far as to align the main gear.