I'm laying out the interior of my 10x10' coop. I'm planning on having a dropping pit under the roost area. The length is 6'. How wide should I make it? 4' wide is what I'm thinking. We're putting in a scooping door on the outside, underneath the pit, so I can rake it out right into my cart. Then comes the roosts. Should the pit be about 2' deep, to allow a ladder of sorts to go up over the pit? It sounds as though you shouldn't have the first rung too high so they can easily get up there when they're young, or old and heavy . Advice?