Anyone ever run 2 plants in a 5 gallon?

Indoor Growing
3

Basically I wanna run a bunch of haze crosses from 12/12 from seed. My thought was to run a few seeds in a 5 gallon and cull the males. So I’d most likely end up with 1 or 2 females per pot. Hazes are new to me, so am cautious about growing out a plant for too long and not having the height for it. I got about 6 feet of usable space and like 7 feet overall. I’d like to sex the like I’d normally do but they would be too tall by that point.