I'm using a 8'w X 6'h Black and Decker Storage shed as a coop. I've removed a panel on the back so the chickens can have access to the run and I'm leaving the doors free so I can walk in and clean the coop. The panel I removed: from the ground to the top of the opening is 6'... so would a 8'w X 6'h X 10'L run be enough space for them to hang out in all day? I'll be letting them out at dusk to forage ( so I can keep an eye on them ).