Hum, the "daylight" is certainly better than the "warm white". Can you put up some inexpensive T-8 shop lights, with 2-4, 4' fluorescent bulbs per fixture? You can up the K to 6500 and your lumens will be doubled per tube. Some people will use those 4 bulb, 4' fixtures and put 2 or 3 6500K and 1 or 2 4500 K fluorescent bulbs in them for a broader spectrum. I like the 6500 K but anything above 5000K will work pretty well. Those CFL bulbs are just really kind of weak in intensity and you'll need an awful lot more of them to cover much of an area over 2'x2'.