Bdegan,

I'm using the same motor and batt's but have settled on 16x12 (sometimes 16x10) props. It is a bit higher here in NM than in NY (4200') but I get a solid 8 minutes of pretty much anything I want to do (except KE loops - having a tough time doing them). My batt is only 1" back from the firewall for neutral CG. Maybe its the weight of the servos that I used. I really do like the 5065 motor and the 6 cell brick.

cheers,
Mike