I would have the poop boards slide out of the coop just like a drawer so you could deal with it outside then slide them back in.
Sounds like a good design for Louisiana. If the drawer-like tray was deep enough that you would not have to worry about poo and bedding piling higher that the sides, then I suppose you could always pull out the drawer-like tray. Problem with the tray design where I live in Northern Minnesota, is that they trays on the prebuild farm store coops are too flat and the poo and bedding gets higher then the tray sides. In winter, this can freeze and your tray is stuck until it warms up. If you have some cold winters there where you live in Ohio, I'd still want to look at the tray design for your locale.
My 6X12 coop is elevated, and with the drop down clean out panel, I simply put my wheelbarrow or garden cart alongside the coop and shovel the spent litter directly into the cart. Easier for me to take to the compost pile by the garden. A small tray would probably be less work in many respects and gives you more options. I am not opposed to clean out trays per se, it's just that where I live in northern Minnesota, I don't know of anybody locally that uses them due to our long winters which makes the tray design less functional. Even the poultry people at the farm stores advised me not to consider buying their prebuilt coops because of the tray issue. This will be my first winter with my laying hens, so I just followed the local poultry owner's advise as to what worked for them and what did not.
I also do not have poop boards under my roosts as I use the deep litter method. Everything drops down to the bedding level and gets turned over in the mix. In theory, I should only have to clean out the deep litter once or twice a year. A number of people on BYC forums have advised me to consider adding poop trays under the roosts, but then I would be cleaning out the trays much more often than I had planned. The local people I know don't use poop boards, because, again, in the winter, the poop freezes and it is easier to throw fresh litter on top of the frozen poo in the bedding then it is to clean out the poop tray when it is -40F outside. Most people where I live don't clean out their coops in the winter - everything waits until spring thaw, then one big cleanup.
It's good to think about these things in your design before you build because some things are hard to redo later. Glad to read so many suggestions from BYC community. I always have more to consider for myself. Will continue to follow this interesting thread....