sort of depends on how big your coop is too, but in a run like that i would say 6 if you use the 10sqft per bird a couple more if they are bantams maybe 8. I have a run that is 7x4x4 and i have 4 bantams and feel like thay have enough room but wouldnt put more in there then those 4
6 to 8 birds is max but your coop will have to be 4x8 and raised to accomidate toat many too. Remember 4 sq ft per bird inside and 10 sq ft per bird outside in recommended minimum footages. It's not a saftey issue so much as a comfort issue, if the birds have room, they won't pick and fight as much
I wouldn't keep more than six LF birds... If you freerange them a few hours daily, then maybe another bird or two (if docile, calm breeds). But if they would mostly be contained, I'd stick with up to six.
