I would use a 105w CFL that puts out 6,900 lumens. Use 3 of those for 20,700 lumens and it will cost you $105 from
105 Watt Compact Fluorescent

If you don't have $105 to drop on lights, you could always to go Home Depot or Lowe's and buy 3 42w warm CFLs ($10 each, 2000 lumens each) and then buy 3 cool 30w CFLs ($5 each and 1100 lumens each).

If you enclose your space with mylar, that you can easily do it. I would check out the Rubbermaid grow boxes. You could just use one of those and put it in your closet. You could do an enlarged version with a larger tub.

T5/CFL Rubbermaid Stealth Grow from Bagseed. - Grasscity.com Forums

http://boards.cannabis.com/growroom-...b-growbox.html

I like Bodom's growbox design alot and your could just click on all these links:

rubbermaid grow box - Google Search