Do you ever consider about biosafety? I got a couple sweetest pullets who brought Marek's diseases into my flock. And they died from Marek's anyway. I will personally never get chickens from somebody else's flock any more. Only chicks from hatcheries.
Also, if you do not plan to cull your chickens, you will need room to add more in the future. I have the same size coop as yours, I have 15 chickens now and am worried about they don't have enough room in winter. I have them free range, but they don't want to step on snow in winter.
Also, if you do not plan to cull your chickens, you will need room to add more in the future. I have the same size coop as yours, I have 15 chickens now and am worried about they don't have enough room in winter. I have them free range, but they don't want to step on snow in winter.