if you don't want TOO many bulbs, buy the 43 watt cfl's. they put out 2700 lumens each and they're only slightly more expensive (about 8 bucks a bulb). you'll need less fixtures which will save space. also, i noticed you're probably using the bright white bulbs, which are fine, but for the veg stage, it really really benefits the plant to have a lot of blue spectrum light, which you can get by purchasing the "daylight" bulbs. i know it's less lumens per bulb for those, but it's a type of light the plants really need. so get a good healthy combination of the bright 43 watt cfls and some of the 23 watt daylight bulbs.