Which pot size is best for me

A question from a fellow grower:

I have my plants in the small red cups for now. About to transplant them next week and wanted to no what size pot would do best… I’m thinking 3 gallon pots. 5 plants in a 3x3 tent with a 600 watt hps light

Thats what I use. And don’t forget the holes…lol

Will

It will do good in a 3x3 tent with 600 watts u don have to worry about light does anybody no how many 400watt hps can u run off one outlet my outlet is coming right off the power pole I have one light in each hole the outlet is 110 power or can I some how run them off 220 cuss I have a 220 plug under my trailer that I don’t use anyone no about this