I wouldn't wait to see what happens with PROMESA.
I had my attorney submit the appropriate paperwork to CRIM at closing. As it turned out CRIM dropped the ball and never got around to processing it. So I did have to spend a day at the office getting it taken care of. I went into the CRIM website to see what I needed, but it is in Spanish and I wasn't quite sure, so I brought whatever paperwork I had.
Since my property is in CRIM-exempt historic district, I even brought pictures of my apartment to show it was in VSJ.
As it turned out, I didn't need anything but the notorized document with the date the form was submitted to CRIM, which, once was given to the right person (and I went through several people and departments before I got to the right person) , was immediately processed.
One thing I've discovered in dealing with folks down there, is that the squeeky wheel gets the grease.