I have a pretty good grasp on the basics with chicken the 10 I have are very happy. But recently I have a friend that wants to get rid of his old 6x6 coop and I have a few questions. How many hens can I put in my 10x10 coop with a 10x15 run? And also the separate 6x6 coop with a 10x15 run? The new coop I'm wanting to raise just silkies in it. What all should I know to raise silkies?