Give thought to how you will dispose of plant prunings, stalks, used soil or medium, and water/nute runoff. Obviously, you cannot throw it in the trash.

Plant material:
Be careful composting greenery outside if you have close neighbors. It will smell. You can chop it finely and bury it I suppose. An easier solution is start a worm farm. You can do it easily with commercially available materials for about ~$125 (cheaper if you build it yourself). They don't take much room, they don't smell, they don't take much care, and they do just fine in the basement. Added bonus; you get to use the castings they make if you want.

Soil or medium:
You can choose a reusable medium (has to be cleaned/sterilized between uses) or use new each time. I dispose of all my used medium (soil, perlite, vermiculite) in my own garden. You don't want to rely on your worms for this. Worms can process this, it just takes more worms than you will probably have.

Runoff:
Please be careful here. Try not to pollute any waterways. I dilute any nutrient runoff with plain water and distribute it sparingly to my regular potted plants and beds around the yard. Its not that much anyway and they dig it.

Lights:
I worry about all the growers using CFLs. They shouldn't be thrown in the trash but specially recycled. You know that is not happening. Why can't they make them without the harzardous crap in them? :wtf: