RE: 4 motor electric wiring
To get a more power consistent performance from the motors its ideal to use them in parallel. However, from what you tell me by using 4 pieces of 5330s it is a huge plane, of which will mean you need a lot of wiring for the battery to the ESC in the event that you use them in parallel. There is a lot of talk about long battery supply wires, best not over 12" because it will kill the ESC. Try the guys in RC Groups, the EP giant scale thread. You got some guys there who are really nuts about EP.