thanks for the great response.

I had originally planned on using three 600w mh/hps .... but a friend of mine who runs a decent sized op INSISTED that I run 1000s. It seemed like overkill for a 20 plant grow, but he swore by it, and I trust his experience.

Starting smaller does seem like it will probably be the best option. I can learn without risking a 4-5k investment .... and it will be done just in time to make some extra $ and move outdoors for the 2009 season.