9 plants, 3x3 square in 5 gallon pots of good soil, good nutes, and say... at least 6 600w+ switchable lights (mh for veg/hps for bud) with good cooling, good fans to keep fresh air, a c02 system, lay some support screens, do some LST'ing, and let em veg till they get BIG. 12/12 em and you will...