If you can't thin out the flock you're going to need to find some way to increase roost space at the very least. You might as well remove the 2nd roost bar from where it's at since it's unusable right now, or move it over the nest boxes and use the poop tray to protect the nest boxes? Not really sure how the entire layout looks or if that's feasible.
Your run is a good size so that will help a lot.
Your run is a good size so that will help a lot.