I'm finally taking the plunge into backyard chickens! My wonderful husband is going to build me a hen house, and it's going to be about 11' wide by 15' deep. I have been scouring every resource possible (and purchasing too many books) to try to find a good layout. Every time I think I find a link, it turns out to be an ad to purchase a book or something. I just want to maximize space, and design the coop so that it's easy to clean (maybe with slide out trays under the roosts? Can anyone help?