I have 16 chickens of mixed breeds. 2 orpingtons, 4 austrolorps, 4 RIR, 3 barred rocks, 2 ameraucanas, and 1 wyandotte. First level is 16 inches and second is 34. Top tier sits about 10 inches from the wall. The total length between both tiers is 180 inches, so I'm well over the 10 inches per bird. Any changes I should make before move in day?