So right now I have a 16x8 ft run for my eight chickens. They are only 4.5 weeks old right now but when I put them in the run during the day I feel like they will outgrow it soon. Their coop is 4x8. Also, the breeds I have are 3 cochins, 1 sussex, 1 orpington and 3 EE. Should I make it 8 feet longer, upgrade it to a 24x8?