air pots-- what size?

grow room is a 5x5 gorilla tent
i will be growing 4x c99 by growers choice seeds. I have some 5 gallons ones but looking forwards to a bigger size for final pot.
i was looking at the airpot 12 gallon but also see there are slimmer or fatter pot sizes , and also maybe the propogation ones for next time around. any input is greatly appreciated!

Not sure about best size, but 3 g works quite well. If your plants outgrow it, you simply drop the whole air pot into a larger one and side fill. Zero trauma

Depends on what you're growing in and feeding doesn't it?

I say 5 gallon. Way to go.

healthiest plants in 7 gallon smart pots, rest in 5 gallon smart pots

Gotta water less with5 gallon