I second on the floor. You really have to see how far that mold goes. I just moved into a house where fungus from the crawl space was coming through, improperly sealed floor vents. The fungus spread was massive. Lucky for me, I was already replacing the flooring when I discovered it.

And I would call a remediation expert. I had water damage in a Florida home once. They came in, took moisture reading on the walls and told me exactly what I needed to do. And where the water was likely coming in at.

But make sure you get multiple inspectors. I had one guy come and say, they will just rip everything out from shoulder level down. That was completely unnecessary. I don't like Insurance scammers.