I have a 4x8 coop with 10 chickens. I know the 3-4 sq ft per chicken rule, but someone has asked me to take in three more from a rescue situation. Do you think they will be ok? They have a 16x10 run but unfortunately do not free range based on our location and predators I hate to turn them away but don't want to take them if they will not be happy. Thoughts?