Well with fluoros, the more the better. bghydro.com has some good deals on compact fluorescents and reflectors (if you're in the US). As I understand, you will need either a crapload of fluoros or HID lamps for flowering. I'm soon going to be trying some LED lighting from solaroasis.com, although my order has been delayed somewhat so I can't vouch for them yet. But check pout the site, their new pro grow bars were just recently released, and there's supposedly a big demand for them. And they only use like 6 watts per bar, but you'll proabably need at least two.