I hacked this guy together last night and it works perfectly.
The GND and 5V cables go to 6 x 10Ah 5v Power Banks. That gives the suit 12A @5v MAX draw before they all cut out! This is enough for me.
Each switch controls power to 2 power taps. The power bank are connected to this block and all powered on. I then sequentially turn on the taps. None of the LEDs light up randomly at all!! and everything works smooth as!