don't use cfl - use a 400watt "hortilux blue" metal halide for veg and flowering ($200 with digital balast from hidhut). if you want to use cfl for seedlings, 1 23watt daylight in a $6 walmart clamp reflector per seedling will grow them for about two weeks but then you will need the hortilux. The hortilux has the same light quality as the cfls but also the intensity/"penetration" you need to really grow past seedlings.
Post a link to a 400 watt with the ballast. everyone keeps saying it's cheaper and then post dead links. The cool thing about that stealth cfl lamp is it has 3 recepticals built in and the cover with the lamps.