What you are planning requires clones. You can fit many plants in a small space and do a low quick grow. SOG is where you grow single colas very small only about 3/4 to 1.5 oz per plant. They are grown close together and require cool temperatures and plenty of air movement with top light. The height required in a minimum of 48" if you have AC to keep the temperature down. More like you need about 6'-7' to help deal with heat. Once you start tying the plant down you are no longer doing a SOG, tying plants requires side room as well as top space. You could crop short and flower early that will keep the plant no bigger then 18" tall at finish and still have some yield. Cropping extends the vegetation period by as much as 3 weeks but the plant will stay short and have more flowers then the single cola.

Do one or the other you just need to pick.