Another vote for staggering the flock. I built for 12 and have only hit 12 once. I get a few chicks every 2 to 3 years and it keeps the eggs coming and keeps the flock an interesting mix of all sorts of colors and appearances.
I currently have 3 Marans in my flock and they are more dominant birds, but they haven't caused too much of an issue with the more docile/"different" birds (I have a Crevecouer and a SF in with them). Space is key and it sounds like you have enough to comfortably have a dozen birds total (I'm including the expanded run space) including integration of new chicks at a later time.
Also personally I'd axe the bantams unless you are able to build a bantam only area IF the standard breeds give them grief.
I currently have 3 Marans in my flock and they are more dominant birds, but they haven't caused too much of an issue with the more docile/"different" birds (I have a Crevecouer and a SF in with them). Space is key and it sounds like you have enough to comfortably have a dozen birds total (I'm including the expanded run space) including integration of new chicks at a later time.
Also personally I'd axe the bantams unless you are able to build a bantam only area IF the standard breeds give them grief.
