Is one plant for one square foot too small of a space for vegetative cycle? What about flowering? I'm expecting 2-3 plants for 4 square feet, but if i come up with four will it be enough space? I'll be running atleast 4 2'fluorescent lights at the base of the plants, and one 250 watt HPS. Right now the box is about 2'x2' and 4' tall. I may increase the length about half a foot. What do you guys think?