Thanks everyone for your replies. Just the info I needed. I suspected it would not be big enough, and I do have some other options, including some large dog crates that I might try to put two together, or a large box. We save everything. Just in case we might need it sometime.
Fred's Hens, no, the coop and run are not ready yet, but I don't need to build a coop, just clean out and do some repair work on an existing coop. I do need to build a run though. Years ago, when my mother kept chickens they used the coop and had the run of the very large fenced 'yard' next to the 'around-the-house yard. We now have three goats in there and it is the 'goat yard' now. I think hawks got a few of hers back then, and some flew over the fence, got on the road, or just otherwise disappeared. I want to do it differently, and would like to build an enclosed/covered run for them. It can be a large one, as the goats have plenty of room to roam when I open up the gate to the pasture during the day. I am picturing building a run attached to the coop, using t-poles, fencing of some kind, with a heavy wire added to the fencing, and then the heavy wire or something on top. They will have shade from trees.
Wish I could describe it better, to get y'alls thoughts on how it would work. I am going to look at the setup some friends from church have made for their chickens, they were saying that their main goal was protection from predators. I've been looking at the pics here on BYC to get other ideas too. I am planning on starting work on the coop and run in the next couple of weeks, and work on it as weather allows. I can call on some people to help too, if I need it.
The existing coop has nine built-in nest boxes, a row along the back side of the coop that are like attached boxes with a round entrance hole. Are nine nest boxes enough for 12-14 layers?
Again, thanks all of you. Appreciate the help.