A friend of mine has an almost identical set-up. (I don't know what hempy buckets are, but he's using dwc.) He was not happy with the 600w lamps and replaced them with 1000's for his latest grows. His yields have increased significantly with the 1000w lights.

His biggest complaint about the hydro huts is that it is hard to access the plants in the back - he does nine plants too. You might want to consider another zipper on the back side so you have access from front and back, if space allows.

PC :smokin: