the run wire: There is a plastic coated wire which is strong enough to prevent predators. The gaps can be your design. I have the detailed pictures. But i dont know how to upload here.
Also, for coop body, we always use timbers. Please note the timber will swell when it gets wet. So, dont be so...
I am Matt from Chinese coop factory. I found it is a interesting forum.
Below is some simple coop plans. wish it can help you.
Someone tell me the way to upload pictures in this post? It sounds different to other forums.