Just love the photos of the barn interior. Just love the barn. What is not to love. We did the same thing with out vacuum pump in the far end of the barn on the other side of a heavy wall. It was the best. So quite and peaceful at milking time.
We didn't have any facilities in the barn for clean up, so everything went to the house for cleaning. That was a pain in the winter.
I would really love to see the new chicken coop when you do it. I've been thinking of putting one in the far back yard, and having maybe 6 to 8 hens.