Well,

To add a little more for you to think about. You want to grow for three years to last you for multi years. I would go for more bang for the buck. 1000 watts or more if you want more weed than you can consume in a month. Flourescent and computer fans are small time not enough to grow for years to come. You have to think big if you want to close down in three years. You will have to have great genetic like Bigbud which will give you more bang.

Look at like this a 400 watter will give you about eight or ten ounces per harvest. You need to grow for the long haul not just till you make the next harvest. I would go for two 1000 watters for flowering and a 400 watter for vegatation. You want to grow excess that you can smoke later so you have to grow BIG. Yes there are cost involved but you can swing it I'm sure.

Loco