I'm looking to start my first coop this spring and begin with 4 australorp chicks. We're still debating on whether to buy or build a coop and are looking over different plan ideas. I'm hoping someone can give me some advice on how large of a foraging yard I should have for four adult hens? Also any tips on picking a coop with ease of cleaning in mind would be appreciated. I've read a couple helpful books, but would like the input of actual owners before we make any decisions. Thanks!