How tall is your closet? You could go with 4 standard 48" double bulb fluorescent lights ( 8 bulbs total) and hang them vertically. Hang one in each corner of the closet. Each standard cool white bulb puts out about 3200 lumens for a total of about 25,000 lumens. Does that put a little light on the subject for you? I just bought a few sets at Lowe's for $7.97 each and the bulbs are about $3.00 each. you'll end up spending about $60 US and get three times the light...

Mark