I am looking to upgrade to a 12 plant soil grow. I have a open floor plan in my basement where I was planning to build, 7 foot ceilings would be the only real limitation. Currently I have a 3ft X 4ft flower room with 2 600w HPS lights, and a 3ft x 3ft stacked veg. closet with 2 2ft 8 bulb T5s. As I already have a grow up and running I am in no rush to get this one setup, I would rather try to find the optimal setup and build it once. Thats why Im asking for any suggestions on room layouts, and lighting setups. Thanks in advance!!