One reminder that was made in the previous thread as well: Consider turning the outlets on one at a time in sequence, with a second or two between each. There is a crazy electrical 'inrush' that occurs any time power is applied to a device. Newer machines have far less, but any WPC era with a transformer was huge. After the switch is turned on and for a short period of time, it pulls ALOT more power than rated for normally... less than a second. A machine normally draws 2-3amps or so, but during inrush, could draw FIVE TIMES that. This is most notable if your outlets are far away from your circuit breaker panel.
It would be best to let that happen to each machine one at a time, so you are not forcing all of your machines to have inrush at the same time.