Need advice on coop and run from a converted stall

[Andy]

How much inside space should I provide the chickens, will have 6 to start never more than 12?

Thinking of a slightly different plan in the barn. I feel like giving them the big stall might be a waste of space. It's 9.5 x 9.5 and 7 feet tall. I'm going to put a run along the barn still that's narrow but long. Say 4' wide and 25 feet long.

 

[21hens-incharge]

I found mine were a bit crowded with 12 in an 8x8 coop. BUT my coop also interior nests and a tiny corner cut off for me to enter.

I am thinking no one knows your weather better then you. If they may end up cooped up inside for any length of time the extra space is very nice for them.