The 8x4 table is out of the question, as he mentioned earlier, he doesn't have the space. Using both 1000watt lights, is not recommended. It's not exactly too much light, but it could burn the plants, even if the room is cool. What you want to do, is get two 600watt horizontals and cover a 4x3 with each, this would be much more efficient. If funds weren't a problem, I would do 4 400watt, 2 metal halides and 2 hps, each covering a 2x3 area. The lower wattage would allow you to move the light closer to the plants, thus proving more efficient than the 1000watters.