cfl's will work but if you're going to use over 300 watts you should just get a hps/mh system. 300 watts of cfl is good for 2 plants. I use the regular GE ones that are 23 watts 100 watt equivalent. That way I get more light spread out. With all that area you're using you'll probably be growing like 6 plants right ? That would be allot of cfl's like 150 watts per plant with cfl. That's just my guess though you'll have to do the math and figure out the lumens but if I was growing 6 I'd use one 600watt hps/ mh system, you can get them on ebay and amazon with built in ballasts it's just plug and play no wiring. But if you get those you'll need like 3 quality thermometers and 2 strong fans.