Nice facilities. I keep mine enclosed in a chic house (included roosting bars two and nesting boxes) with suitable square footage per bird with connected run space both roofed for weather and predator protection. I like the idea of adding on run space covered in hardware cloth (19g 1/2 inch) Run space should be 10 sq ft per bird. It should also be roofed. Mine is shingled. I would also recommend roosting bars outside. Mine love the roosts for sleeping and staying up out of bad weather. I have not had a loss yet so prayers. I let mine free range under a watchful eye. They are only out when I am and my chicks know to stay in the back of my property and they are not permitted in the woods. They know the woods indicates as far as they can go. I will go out and make my chickens stay in the areas I want them and have only had to do this a few times to correct them meaning they are easily trainable to stay in a certain area if you train them to do it. Now that said I probably don’t have as many chickens as you or the amount of property. On weekends my chickens are out longer because I am home to watch and not usually working. They also go in their house at night like clock work. Good Luck!