So I have done a lot of reading on setups and I finally have a question. Lets start with what I will be using first. I will be building 2 maybe 3 enclosures, with all the goodies. I all ready have the intake and exhaust systems figured out for venting and temp control. Where I am stuck is the lighting. Grow style will be SOG cause I can get more harvest in a shorter time more often.(correct me if i'm wrong still in the learning phase). Now to the question For the veg enclosure, should I use a 175-400 watt mh or a 150hps with 2 to 4 6500k cfl's? The flowering enclosure i'm thinking about 400-1000 watt hps. The question is, should I use a unit with a self contained ballast like the sunsystem5, or go with a unit that has an external ballast? Is there really an advantage using an external vs. internal other than maybe energy effiency. The main thing I am looking for is speed. I would prefer to keep the whole cycle at 30 days veg and 60 days flowering and 20 to 30 days drying and curing. I will be using soil since a hydro system is a little more involved. Thanks for any help.