If being an agent isn't something you can do, I would say go for something fulfilling that covers the mortgage(s) and go from there.

As long as it's not a land contract/contract for deed where you don't get title, you are positive you can come up with the $15k balloon at EOY1 and you have viewed the executed fulfillment deed to your satisfaction at closing, I'd say go for it!

However you wrote a vague email that looks like ABC sold you some terrible product and then did not fulfill its obligations to you.

In 2013 I took the first step toward fulfilling that dream.

They have a "contract" that must be fulfilled to get the deed, hence the name contract for deed.This is different than a standard deed of trust in that with a deed of trust the buyer actually gets title now eventhough they are still paying on it.

they're certainly prepared to fulfill their obligations but I figure for them, it's worth a shot :)

That is what happens if either party does NOT fulfill their responsibilities.  

Are there other ways and other companies that can fulfill your real need?

You need to then fulfill all of the requirements for that.

If  owner didn't fulfill the terms, you may be able to call the loan due without explicit acceleration clause.Not legal advise.