If you make a nest box ( I use a 36" wide one for 8 hens ) with a lip on top and a roost bar on top of that and put some legs on it to raise it up about a foot. No loss of floor space and all in one and movable if you don't like the current location. You could make the nest box 48" x 24" and ~14-16" high then the top of the nest box would be 26" - 28" high go up 8"-10" for the roost bar and your done.
This is my new poop table.
In the shed with the roost installed.
JT
This is my new poop table.

In the shed with the roost installed.

JT