From my understanding about flood insurance is if the house has no mortgage then you aren't required to have flood insurance on it. That is why so many people are running into problems finding money to fix their damaged homes.
With a foot of water it touched all the outlets running around the bedrooms, living room ect. And they have to be replaced. You will need to have the floors ripped up and sub floor gone. You need to bring it down to the studs. You can go 4' up on the walls which is one board of sheet rock. And to the same to the insulation on the wall, as long as the mold hasnt gotton any higher then the water. Any ducts in the crawl should be replaces as well as the unit outside. All appliances that got hit with salt water replaced, as in stove hit water heater ect. All doors and trim and so on. It might be easier to take all the sheet rock down to the studs so you have everything open to air out and mold is taken care of.
Any questions shoot me an e-mail or call me. Be very careful of out of state companies and unlicensed and uninsured hacks.