that's a big ass closet. mine is 2x4x4 and I made my light fixture with some 2x1/2 inch board's and 8 light socket's I got at lowe's for about $2.80 apiece and doubled them up with "Y" adaptor's and have a total of 16 23w cfl's, 3 to 1 6500 k/2700 k for veg and the opposite for flower. I still have at least 6 to 8 week's to go and then go to led's. it's now became an obsession that I justifie by the high price of buying from other's.