RVM,
I think we are getting closer. If your plane weigh's 13lbs as an electric do you think it will weigh the same as a gasser? Not sure how much the motor and batteries weigh. If so the 40GT well work, but be right on the edge for power. The Brillelli 46 produces almost 30lbs of thrust with a 22x8 prop. That would give you more than a 2 to 1 power to weight ratio and that is what you are looking for to do 3D. Plus you will get Mark and Scott at Brillelli to help you with your questions and I do mean help. They are there for you when you need them even on the weekends. I should know I have talked to them many times at the field on the weekends.