just a thought, But why so much room for veg as you WILL need lots of room for flower. I recently bulit a box (4x8x7tall) and split it in 1/2, Just to find out that more room in flower would be needed and a bit of wasted space in veg. Im in the prosses of changing it a bit, but I have 2 girls in flower (dont want to raise there attuides) So you may want to rethink your use of the space. remember that the ladys asses will get 2 to 3 times there size in flower.