Sorry , not very helpful, but I couldn't let that one go through to the keeper.
In a PC box you would probably want to grow from 12/12 straight up, Otherwise you may run out of room real quick. Mind you, with training and pruning, sure, it can be done. It's possibly not the most effective or efficient way, but definitely compact, and very stealth.
If you can control the growth as wobbler suggests, with training.
I created my own grow box and was advised to look for "dwarf" plants/strains. They are bred to grow short and fat, rather than tall and "Christmas tree" like.