This is entertaining.

If everything is working for you, why even entertain the offer.

If it is being sold as-is and they are only entertaining cash offers, it could be because the house is not habitable in which case a bank won't touch it with a mortgage. 

Class B would be older (maybe 10+ yrs old) with the same amenities, or you could argue that new construction, but with cheap finishes and "bare bones" amenities, would also be B.For area: it commonly comes down to crime, schools, and convenience/entertainment access.  

Our situation: My father is a cancer patient, and I am a permanently disabled adult in my 30’s that is in severe chronic pain after a workplace accident.

Would these types of companies prefer a cash purchase, or would seller financing be entertained?  

Entertainment is surprisingly decent for such a small area (at least it was before the U.S. all shut down), but you'll still need to head to Phoenix to see any major sports leagues.

Don't believe me, oh-man, just wait until you have REAL Landlord problems, like evicting a tenant because there meth-fueled adult-child moved in and is rapidly destroying the place, only to get it all done over months and receive back a human-feces painted home, copper stripped, destroyed everything......

Great location in central Augusta close to great shopping, entertainment, and the most famous golf course in the world.

Next time we won't entertain it but if I was I'd ask for to see a bank account statement showing matching deposits.