Is this enough?

15 g a plant is fine with me ^^.

Update: thanks to the miracle that is Black Friday I picked up a 2 foot 20 watt grow light and a few security lights I modified to stay on all the time. This leaves me with a total of 10 lights. One 2 foot long 20 watt fluorescent grow light, seven 23 watt CFLs ( I left my 100 watt CFL on my table and my cat knocked it over T_T) and two 15 watt CFLs. I think this should be fine for a relatively small grow room (1' 5"x2' 6"x4' 1") I am only going to try to grow 2 plants.

One more thing: is it possible to control the plant height? It probably isn't but I figure it's worth a try to ask ^^.