I have a 2x4x5 tent. I wish it was a foot taller. I also have a 400 watt HPS for it.
I have a good ventilation fan, a strong one and the temps are already threatening
to go into the 90s. In a week or two, this plant will be done, and I will stop til Sept
because of the heat.
What about setting up a frame in the closet to hang the lights and fan, and use the whole closet?
That would give you more space, and ventilation would be easier. Don't forget you need some
sort of opening to get air in there.
I started with one plant, I am still growing one at a time. I would suggest you start with one.
Lot less painful if you make a mistake. We all make mistakes... Then as you get a handle on how
to do this, you will have a better idea on what grow methods you like.
If you are going to use potting soil, I like the GO go box, you get enough to get
a few grows without spending a lot of money.
http://www.amazon.com/General-Hydro...33316&sr=8-1&keywords=general+organics+go+box
Don't go cheap on the fan. Get one with a rep for quality, and make sure it's rated for more space than you have. You are going to want to keep air moving. I have a Can Fan, but there's others.
If you use potting soil, and easy way to deal with this is a self-watering pot.
Pot plants get very thirsty in flower, so you will still water from the top. But
the reservoir really helps, and doesn't require the fussiness of hydro.
http://www.amazon.com/gp/product/B0053NKHDY/ref=oh_details_o04_s00_i02?ie=UTF8&psc=1