i'm starting a closet grow room and am curious about the best lighting. It seems I need HPS 600?? Is this necessary or can I get by with HPS 400 OR something like this: 2 50-Watt HPS security lights from Home Depot ($30 each at Home Depot) 8 CFL's (4-Packs for $1 at Rite Aid or Big Lots) ?? Also, how much of a rise in electric bill can I expect to have with the lighting I need for 1-2 plants? What other lighting do I need? I read that it's better to have 2 lights, 1 for flowering and MH for veg? Is this really necessary? I want to stay somewhat on the cheap side. What should I get? I want to go build/pick up some lights soon! Oh my closet is about 6'x4'.