Photos are funny things - looks no where near that wide in the pic

. Honestly I'd go with that option - you could do a really lovely coop and secure run with that space and then let them freerange up the hill if that is what you want to do (and if there is access between the 2). I think the back looks too shaded and if you said it is really wet that is no good an as much as i love my chooks I don't want them living under my deck (if I had one

), I have enough trouble shooing them off my terrace (why do they choose to come there to poo??).