Ok Im going with this plan. 1) Im curious how do you attach the nest box to the coop? 2) The run under the coop has wire, should I replace it with plywood? I read somewhere that you should have at least two sides that are solid. So if a raccoon or other animal were to try and get to them the chickens have a place to run and hide without being grabbed. 3) Do you see any potential problems with this coop?