I currently have 12 mille fleur d'uccles. There are 6 males and 6 females. I am deciding on which 2 males to keep. I want to make a chicken tractor for the ones I keep, but I'm not sure how big to make it? There would be 6 hens and 2 roos, so what do you guys think? I need to know specs for the 'coop' and the run, since my other tractors don't have 'coops'. I'm not sure how big to go! Thanks!!