I would get rid of the UVA/B lights, along with the 100W 2500lm light. It seems like you have a very inefficient light setup. For such a small place like that, I'd recommend a good fluorescent setup or a small HID setup. This all depends on how deep you want to go with this. Ventilation will definitely be needed, and will be dependent on what kind of lighting you use. Also, did you want to filter the smell or is security not a problem for you?

As for nutrients, try to go organic, or make your own teas. nothing beats the aroma and taste of organic cannabis.

Other suggestions I recommend is to ditch the aluminum foil and get yourself some proper White/Black plastic sheeting, or Mylar. Foil tends to create hot spots even if it's applied "correctly" and Mylar does the job of reflecting light better.
-Lay