It depends on how much room you have to work with and what your future plans are. If you have the room I would build a 2nd area which is large enough for all of the birds, but keep the first area for quarantine or for a separate breeding pen. If you think you may want a breeding pair at some time, or to raise chicks with a broody you may want the separate area for that also.
If you are short on yard space you may want to plan a larger area for the entire group and plan to do your brooding/quarantine inside or in a garage or basement area. Planning more square footage for coop and run than you expect to need gives you more flexibility later down the road. More room also helps avoid conflicts between birds and provides them more exercise area if they have to be in the enclosure all of the time. There are a lot of variables to take into consideration
at this time.........my current coop, I feel is full with the 4 girls...........
I really want to get some chicks for spring.........but just a few........3-4 is the most...........so
that means a coop for 8-10 for breathing room OR
a second coop
I want chicks that have blue eggs, olive eggs ( if possible) and dark brown eggs ( if possible)
Plus I want chicks for the experience of raising from one day old chick...........this will be very special.
My yard does not really permit for much chicken raising...........as I am in a suburb and the ordinances say nothing about chicken raising..........
I think I need to make my set up more attractive to be sure to avoid complaints..........
so I have a pallet box.( thanks to stake) and want to build it into a bigger coop..........and one that looks nice ..................
plus I have a few areas that have dips --------not inclines but they will likely be more wet than other parts...........so I have to consider this too.
so many variables.......
If I could just purchase a beautiful ready made one .......great..........but some of the ready made coops are rather flimsy and costly.............
anyway-----I am in the process of gathering materials and trying to figure these things out!