Yeah man,
I can save you some time and frustation if you'd like. Growing in such a small place presents problems. The res is a plastic shoe box I found at Target or National Liquidators. Measure the inside of your box and find the largest plastic/watertight tub that will fit in your box. Take into account anything in your box that may cause your new res not to fit. Very Important - Be sure it's light proof!! After you drill or cut the holes for your net cups cover the top of the res with good quality aluminum tape, also, either spray black or cover the whole res with the tape - Light Proof!!
My res I have four sites, of course, I'm accounting that I would end up with two (three tops) after males have been dispossed of. I believe 3 female plants will be most productive in this space, which should give you over a ounce. I currently have 3 very healthy seedlings in my box again, but I also have a much bigger project at hand, 6 plants, 1000 watt HID, 5 feet of hieght!!!
Start a Grow Journal and send me the link, I'll offer a word here and there...