I am in the process of building my first coop and it is a raised coop 4'x8' with a fenced in run 8'x8' for six ladies. My hope and goal is that they can primarily live in their coop and run. My yard is clay and dirt and I am nervous about it turning to mud. The run has a roof, but what would yall recommend for the floor? Is dirt okay or should I fill it with gravel or sand or pave it? Also, since I am putting hardware cloth all around the run and a foot out, do I have to close the ramp door each night or is it safe enough not too? I have a lot of potential predators, but am building a really sturdy structure. Thanks! This is my first post, so your help is greatly appreciated.