I used only 1 20x30" foam board. I used 4x 9 gram servos. 2832 1200kv Brushless motor with 30amp ESC. Spektrum AR620 6-channel receiver. 2200mAh 3S battery with T-60.
This long flying, long range drone now includes a three axis stabilized gimbal, a larger battery for longer flight time, and an optional PA megaphone speaker for crowd control ;-)