Alright, you're well on your way now. Stay vigilant, it's only a little while longer!

How big are you expecting to let your plants get? I'd say you might have 2 or 3 more weeks until you start to flower if you plan on using fluorescents the whole way. Now's the time to get yourself ready: make sure you have enough lights to finish a 2-3' plant(fluoros only penetrate like half a foot or so really well) and some fertilizer with a higher P and fairly low N.