Thanks for these suggestions. I'm going to go with a separate food station and water for the time being. I also have a little wood ladder for climbing. I think I'll lay that horizontally between the nesting box where they hide and the side of the coop -- an obstacle to provide a little security and make it harder for the others to molest them.
My space for the U.S. might be paltry but for the Dominican Republic, they are living in a Beverly Hills mansion, so it's relative. My space is what it is . . . When 10 are lying in the short shady end in the heat of the day after eating, they are occupying 1/4 of the space.
Oh, and yes, you are exactly right. My pullets and cockerels are around 3.5 months and I estimate the new pullets around 3 months.
My six "extra" cockerels that I pulled are tethered in various locations. I guess I like living dangerously because I'm thinking about adding two guinea fowl, which I can buy walking distance from my house. They are in an outdoor meat market with many types of fowl that you select and pay to have killed and butchered on the spot, and bring home for lunch. The guinea hens there are mixed with the same breed of chickens I have, in cages, and they all seem to be fine. I've done some reading about others' experience keeping both. There are some risks in terms of aggression but not always.
I've always loved guinea fowl and I've eaten them. The meat is black. They have been in Haiti for hundreds of years . . . They are called pintad.