RE: question on ESC and BEC
I was flying an ASpera from 3D hobbys. I think weight would be a problem but not a difficult one. Space would be more difficult but I could put a small 4.8 V battery in the rear of the cockpit and try and get the CG right. The main thing is to separate the batt power so during low voltage cut or main batt disconnect I have control through servos.
Ken