I want to grow in one of those double door stand up office cabinets. What bothers me is that I want more depth than 18". Can someone advise on something I could buy, that looks like it belongs in an office, that is deeper. I'm estimating 4"across and 72"high. Also, I plan on vert scrog. Can someone give me an estimate of plant quantity and seed type for these approx dimensions. All cloning, mothering and vegging will b in another location.