We are in the process of having to build a temporary coop for our girls. We have an extremely large chicken coop that was built around 1910. It's falling down, and must be torn completely down to be rebuilt. Our girls are housed in a portion of it currently. Since we've never had to build one ourselves I'm not exactly sure how much space is needed. We have 12 chickens currently (including 3 roosters, which will soon become 1). It will be a structure that will have to last possibly a year or so. How large of a coop, and run would you say my girls need??