In that case, I would probably put a roost across each end of the current coop (so the "back" of each new coop), then nestboxes along part of the current front wall (the one with the door), and feeder/waterer just inside the entrance to each coop for easy reaching and tending.
A poop board is one more thing you can bang into when you move around in the chicken coop.
Then again, it also provides a space that you can put things underneath (like nestboxes or a brooder) without having any chicken poop get on top of those things. If you have trouble bending over, you might not want to put nestboxes or anything else under the poop board anyway.
Depending on what height you put the poop board and the roosts, it might be at a better height or it might not.
A poop board is something that should (ideally) be cleaned every day, so you don't have lots of stinky poop right underneath the chickens' noses as they sleep. If the poop falls on the floor underneath, it is further from the chickens, and has a good chance of getting buried in the bedding each day by the scratching of the chickens (not always, but often). That changes an everyday job (clean poop board) into a less common but bigger job (clean the whole floor of the coop when it needs it.) If you add fresh bedding on top as needed, it become an even less common but bigger yet job (clean out accumulated deep material from the coop.)
I can't say whether you would like a poop board or not. I know that some people do like them and some people do not.
they are SOOOOO tempting!!! But, you are right on the no-vax status, plus I haven't been impressed with any I have gotten from TSC. We have a local farm store that gets vaccinated chicks from a different hatchery and they have done super well!
