@Bobby Basham - Keep the 8x8 and ditch the 8x6. My DH said to build 8x8 and I said that would be too much room so he built it 8x6. NOW I'm swallowing those words and sweet talking my DH into trying to "add on" to the coop - I know......I know. Live and learn - now I'm passing it on!!
Lol!
I'm just the opposite, I always try to add on more than is necessary. You never know when you might need more space! our newest coop is 8x16 ( for 27 chicks + one roo), a little bit large, but we might get more chickens, someday...