I forgot to add that predator prevention will require an apron around the run. It can be laid flat on gound and grass allowed to grow through to which it will disappear in a month from growth and can be walked on/mowed over or you can lift the sod and lay the fencing under it. 2x4 welded wire 14...
You could make a coop and run like that for about $350. It's really not that hard and that way you can design it to your needs. Run size is far more important than coop size. With small coops nobody should be shutting birds in for days at a time nor putting feed and water in there so your...