Since you are in CT (although if it's very coastal, this might not be such an issue) I would like to point out that if you have popdoors on BOTH sides of the building, it gets REALLY WINDY AND COLD in there on many winter days. Ask me how I know
(I didn't build it that way, it's a converted dog boarding kennel)
So if it is at all possible for you to arrange things so that at least in wintertime, you can have popdoors only open on the downwind side, that'd be ideal. Or you can do what I do, on the coldest-windiest days I have the upwind ones open for a few hrs in the morning when it's typically less windy tho colder, and then close them and open the downwind ones in the afternoon. But that results in less outdoor time for the birds.
If you must have both-sides popdoors, see if you can have the upwind-in-winter side have roofed runs that you can make the W and N side of the runs SOLID for wintertime, so the wind usually can't blow straight into those popdoors. (I do have a roof, and tarp/burlap that side, and it's still windy, but with a smaller coop and more solid sides on the run it wouldn't be such an issue)
I would not recommend an A-frame design for this at all. Build a proper normal shed (stud wall or pole-building style, your choice)
I *would* recommend building it as a single open space, and then make your dividers REMOVEABLE/moveable. So that they are freestanding wood-and-chickenwire panels that you can screw or bolt in wherever you want. That way the space is flexible as your needs change.
Good luck, have fun,
Pat