You don't need A LOT of light for veg. You could run ~60+ watts of 5000-6500k (light spectrum) CFLs and probably get by fine.
Budding for CFL's can suck. You'll need 2700k (light spectrum, again) for this. The more watts, the better, as long as you can keep heat under control. Canopy penetration with CFLs isn't as good as HPS (for obvious reasons), but it can be done. Just remember, get a lot of watts of light, and try and keep the light surrounding the plant. Don't just hang your bulbs overhead, as this doesn't reach the bud sites.
that's the gist of the things i know