Glad I can help. If your not doing sog, you could have one 1000W. In that case make sure you get a digital ballast so that you can do both MH and HPS with a conversion bulb. I would probably want a 6" fan for the cool tube, and one or two more for circulation.

And about feminized seeds, and doing things to feminize: I have not seen any scientific proof that feminization methods work. It is a controversial and touchy subject. Many experienced growers have said that they have tried feminized seeds and other feminizing methods, and they don't see any difference. On the other hand, some people swear it works. I'm with the group that believes gender is determined by genetics, and you can't change that unless you have decoded the MJ plant genome and know how to manipulate the dna of the plant at a submicroscopic level. Let me know how that works out for you.