Floor Pan Opinions?

I would say get new metal and have it welded in if you can get it done.

I wish I could have told the previous owner of my car that "repaired" my floor board that. My floor is a wooden board over rusted out metal (board is now starting to fall out), and then over the board is a bunch of spray foam, then on top of all that is a "slow children" street sign riveted down. Now I have to tear all that out one of these days and cut the bad out and weld the new in. Pain in the butt for what someone could have fixed better the first time it was done.