I'm certainly not an expert on this subject and I'm only posting this to show you that it can be done. We have 36 pots in a space about 5 foot by 5 foot with a Metal Halide lamp for root and stem development and a High Pressure Sodium lamp for fruiting and we expect to get a very nice supply of vegetables on a constant basis, all year long.
Broccoli, Cauliflower, Chives, Onions, Roma Tomato, Cherry Tomato, 3 types of Lettuce, Red Peppers, Jalapeno Peppers, Carrots, Sage, Basil, Cilantro, Thyme and Parsley.
We have Corn, Cucumber and Lettuce outside.
It ran about $300 total.
Here are a couple of pics.
Tomato's, Carrots and Onions
Pepper, Broccoli and Tomato's
Please, don't feed the NWO.