I currently have 9 chicken (3 bantams, 6 RIRs) in a 64 sq ft run...but want to add one more 8x4 section to make it 96 sq ft for the birds to have. What do yall think about having the run covered with just the welded wire to keep pretadors out? Do you think the smell would be unbearable when the poo got wet from rain? Of course the coop is covered, but I am hoping that I can get away with the run being left open to the sunlight. What are yall's thoughts???