Hi Zero
I decided to use the GT-80 in my pup as well. Certainly more power than what is needed but throttle control keeps the beast realistically under control. A G-62 is plenty of motor but the several pilots that I talked with that had a G-62 set-up all said they needed two or three "Klidesdale shoes" up front to balance. My pup is right at 30 lbs. including a smoke system and servo's were mounted under cock-pit; no extra weight to balance was required. Sucker floats like a kite!