larger scale grow planning

as soon as i got my appartment i will start a bigger sog ... i thought bout using my budbox s (75x75x120cm) as mother/clonebox and flower them after they got roots in a homebox xl ...i can squeeze 289 pots in there^^

what do u think bout this setup?

I don;t know about the budbox but i would not stack 289 plants in this grow tent, that's to much.

I would do one plant every square foot, flower them(12/12) as soon as there is some new growth of rooted clones..

Your plant will throw out more heavier buds if they can catch more light so try not to overload the area.

What type of equipement is going to run in there?

Your first problem is that you're going to be in an appartment. A small grow, if any, would probably be much more safe than trying to stuff 300 plants in a room.

Appartment complexes have routine pest control, smoke alarm, service call, type things all the time. You WILL get popped if you try to have 289 plants in an appartment unless your situation is unique. Mark my words. Just go small with it.