The kids can tell the new ones apart and have named them. They also "banded" a leg of each hen to help with telling them apart.
We have had a bit of territoriality between the two groups, but that cleared up as the day went on. And, we had 5 eggs before lunch today!!!
I think 9 is a really good number for our space and family. It will give us enough eggs to use and some to share. The yard has enough space for them to spread out and not scratch up one area too much.
Tonight we are celebrating a bit of good news for our family with an actual steak. I'm going to give doing a "real" London Broil by cooking it in a cast iron pan.