Sounds like a fun project. Those motors are good. In my 700g plane the A20-26M, 8x4E prop gives me up to 20 min flights on 1200mAh from a 1550mAh 3S1P LiPo. I would recommend starting with a smaller prop, an 8x4E or 9x3E or SF. You should be able to hover at about 6 to 8 amps per motor, 8 min with a 5000mAh. Don't go over 10 amps (120 Watts) with these motors.