Hello, hope this isn't too long of a read, but I was curious what everyone thought about this situation: During turnover, rather late, I noticed the tile of the shower was cracking along the grout lines, and I noticed it had some give when I pressed the walls.

tile expert?

We're going to tear out the drywall around the jacuzzi, replace it with cement board, add a shower head, and tile the surround.

Some contractors will only warrant the installation if they are also the supplier of the windows.

Check With the attorney who provided the quiet tile or the title company that took care of your certificate.

How will you handle employees, suppliers, and contractors? 

It should outlast a tenant turn or two unlike carpet but no where near as hard to remove as tile. 

Being a 1960s era, it will have everywhere.  6 inch tile floors, hot water pipes, countertops, etc.Would check on that before diving in.

I’m looking for a list of suggested products (cabinets, flooring, tile, etc) to rehab the interior.

Sounds like there are several unhappy customers of Neal Aviation (Garrett Neal is the owner of the company on record) for being sold bad parts and they're burning suppliers with hot checks for parts for privately owned aircraft (in their more recent business reviews).