Awesome to know. I have a pr of false perc clowns and an algae blenny. A pistol shrimp and plan on about five cardinals.That's a 60 cube footprint but a little shorter.
I think any of the flasher wrasse would be just fine in there and they are some amazing colors. Theres a few fairy wrasse I wouldn't hesitate to put in there either. Lubbock's fairy is one. You could add probably 3-4 different wrasse comfortably depending on what other fish and how many hiding spots you have.