"Are the servo pins powered on this board, so we can attach the servo leads directly to the X2.1 or like Pixracer we have to use a UBEC to power the servos?"
"Nice idea. However, I have couple of suggestions: a) consider using li-ion packs for longer flights. b) consider swithching to improved flight controller, e.g., Pixhawk2.1 or Pixracer."