My first grow was in a small closet with 4 105w (400w equivalent) cfls. I grew 2 planta that turned out okay. They're kinda on the small size and took forever to grow. I guess it depends on how big a closet you have, what kind of plants your going to grow, wether or not you're going to lst, how much time do you want to put in to this, what do you hope to yield, is this a personal grow, etc, etc, etc. To play it safe I'll say 2 photos, 4 autos. Just my opnion though.