I know that the minimum space for a chicken is 4 square feet. I was hoping to get 4 chickens this summer. However, I might only have a coop that is 4x4. Would that be too cramped for four chickens or would that be okay? I know the rule is to always go bigger and eventually, I probably will further down the road. I'm just wondering if I can have 4 chickens in a 4x4 coop or should I only put 3 chickens in there at the most? Thanks!