One outlet coming out of your ceiling suggests you don't have the idea. You need to be able to raise and lower cfls to keep them close as the plant grows. What works well is large clamp reflectors with 42w cfls. These each have to be plugged into an outlet. So you need good outlets on good circuits that can handle the load. Then you can use heavy duty extension cords or power strips as needed. There's a lot more to it than that, you ought to do some reading around here.