Beautiful Roo looking for a home

Hello all! We are newer to the central coast; transplants from WI. The house we purchased came with a very sturdy coop and enclosed run about 10x12' in total size. My parents raised meat and laying chickens, so I understand the basics of their care. But, it was a different climate in the upper midwest. We are going to start with full-size chickens instead of chicks. Two questions - 1. How many chickens would be a good fit for a 10x12' coop? 2. What advice do you for a newby?

I just put a chick under my favorite hen two days ago (from hatchery,i dont have a rooster ) , i have them separated with wire from the other hens, she has been bringing her out to scratch ,etc. When is a good age to remove the wire and let them join the others ? She is very protective of her chick! Even puffs up and sounds like a raptor to me !

Hi, I live in Los Angeles (so no frostbite risk) and I noticed that one of my rhode island reds has some dark purple on her comb. The problem is that I don't know if she had this darkness before or not. I don't think so but not sure. She's eating and hanging out fairly normal. The only difference in behavior is that she the last week or so she has been sitting a lot like she laying. They were dewormed about six weeks ago. Should I be concerned? Any input would be appreciated.