Almost finished with the coop and just need to add the roosts and nest boxes. I can get my hands on some milk crates. Would these be large enough to use for nest boxes? I have 6 hens. Should I get 6 boxes or would 4 work okay? Also, I see linoleum on the floors of some coops. I have a plastic floor, but was thinking linoleum would be real handy for the poop board under the roosts. Any problems with that? I would like to add a slide out board or drawer under the poop board that I can sweep the poo into and remove it so I can dump it into the compost bin. Any thoughts-suggestions much appreciated!