Wayne,

Your Atlantis will have more than enough power with the GMS .47. One other thing I thought of is fuel proofing. The grey/black painted firewall does not seem to be fuel proofed. I used thinned epoxy on it and the fuel tank area all the way back to the trailing edge of the wing saddle.

This plane eats up a lot of sky very quickly! I pulled back on the throttle soon after takeoff on the maiden flight until I had the plane all trimmed out.

Thanks for the tip about the fuel tank....I'll keep an eye on mine.

Happy landings,
Gary