I am working on a design for our coop that my husband and I are going to build this fall in preparation for some spring chicks. I was wondering what people's opinions on a few things were. First, do you prefer a coop that is built on the ground, or one that is raised up with space underneath, and why? I am leaning toward the raised one so that I can have the floor under the roost be made of wire so the poop can fall under the coop and I can shovel it out from there. Is this a reasonable plan or is there an important detail I am missing? Second, is it ok for the chickens to walk on the mesh wire in the coop, will that make it too cold for them in a NC winter (should be pretty mild with lows rarely below 25 F)? Thanks!