Tilt - those were all really good points. I'll begin my adjustments shortly!

The floors should be an easy fix. I googled some old stables photos and I see that most of them don't have wooden floors, you're right. I do see some of them have really dusty, dirty brick floors. Maybe that's next. Good call on the water barrels and the size of the center row--would ten feet be a reasonable size for that aisle?

Looks like I have a lot more work to do on this one than I thought....