Hi, I didn't realize you built it from scratch, I'm afraid your power won't be good enough at 2.7kg AUW. The loading you probly meant to say per sq. foot? I work metric which would translate to some 115g/dm2, that's pretty heavy for a small plane and no power. Forget about 4S, 6 would be more realistic but than again extra weight. I wouldn't worry about the l/gear at your weight. I suggest extend your wing tips by 3-4"each to reduce loading, that's what I do with overweight models, easy fix, I don't use whatzup. Cheers.