But apparently, and to the best of my knowledge to date, I'd have also (unknowingly) subsidized my tenants living arrangements.3.)

living arrangement is cheaper, is the ONLY reason you're looking for an FHA loan because you're really trying to INVEST, but, you have less than 5% deposit?

Post anything close to resembling a deal and a buyer or funds are available.

Arrangements are already made to return the prorated rent for July and we have documentation of damage that has occurred not due to the flood.

Our arrangement works fine for both our families.  

The greatest benefit that High Net Worth individuals have in situations like this is that there are usually multiple residences or options for living arrangements while the investment properties are seasoning.  

We worked out a very informal arrangement for landscaping, and snow removal.

The past is the past, but if you do it in writing you should be able to change their living arrangement legally, fairly, and then if they don't pay, they go.Just my two scents.  

Will I be able to still assign a contract for a house on say, for instance, foreclosure (or under probate, other off market scenarios, etc) and still be able to arrange seller financing? 

There's an arrangement with combination screw/bolts and a cap nut, and I'm doing it over a tile backing.