thanks for the pics, excellent choice of a POI to take over for a horde base.
And there are some solid design elements/solutions in what you've built.
Certainly looks to me like you're learning and adapting, kudos!
Only real concern is what meganoth mentioned, the ladders.
There's a pic in the spoiler of my earlier post with an example of how I use ladders that keeps the zeds from climbing them, and also makes it easier for the player to climb up.
In case you & your buddy find yourselves inclined to do more horde vs. base experiments; you can use the 'debug mode' (enable via the console with " dm " ) then enter the Escape screen and there you can adjust the Day/Time.
Wouldn't recommend doing this on your main save game.
But it's useful if you want to start a new game, use the Creative Menu to give yourselves roughly what you'd have had by Day X, build a test base then advance the Day/Time to the horde night you're after.