im using 2000w for my room which is 7x9x8 and im growing 17 plants. i know that if you plan on growing this many plants then you will need at least my size room or bigger cause i can see that my room is going to be a tight fit. it is more important to have 8 prime clones with space then 16 scrony clones. your yield will be about the same if not better and it will be easier to manage.