Hi Everyone!! I'm going to start building my coop soon, and am wondering what sized wire mesh to use....Should I use hardware cloth?? Do I have to use the hardware mesh all the way up, or can I just line the bottom a couple of feet so that the predators can't grab the chickens? How high should the fencing go up?? Should there be a top to the run so that predators can't fly down into the coop and get the chickens??? ANY tips are appreciated!! Thanks so much!!!