If you want a "cool" grow area then you might want to buy a small 2x2x7 tent, they're cool and it'd give you room to expand a bit when you get some experience. It doesn't take up much room and you could start off with one plant and grow more later if you really wanted. I supposed you could dry the harvest in a PC case, if you can control the temp and humidity but I don't see why you'd want to do that when you can use the tent to dry after you harvest.
YMMV...
Disclaimer: I still use HID and I'm NOT an LED expert. All of my LED knowledge is from other parties or research so I can't say from first hand experience one way or another. I also run a medical grow consulting business in SoCal.