I'd recommend reptile 10.0 uvb compacts as well... they sell them at your local pet store, they are 26w each, I would use at least 2 to an equivalent of 500w of regular lighting.
Two or three...but they say more light is always better with CFL's, as long as you can manage the heat. But yeah, if I was running 6 2700K bulbs, I'd run 3 6500K