As my post said, we are burying the thing. Five feet dirt on top. We are aware of heat problems etc. If we used the first 10 feet for veg/etc, what is the most productive way to layout the other 30 feet? We see we can either put 10 or 12 monsters on the floor and let them go wild, or if we layout out standard 12" per unit lower the lights etc etc for smaller plant quicker production, could we grow a shelf 4 ft up the wall and double production? Yield is our goal. I guess we wonder if we should maximize the 8 foot height.