There are those on YouTube who are very close to violating the law, if not dancing all over the line.In my opinion, the real problems originate when the buyer isn't clearly disclosing the risks to the seller, or violates the Consumer Protection ACT, or doesn't have enough capital to make the payments, or does equity stripping, (some equity stripping is legal, some is not)  12 U.S. 

Sounds like somebody had Seller's remorse or a disgruntled student or someone who had equity in a deal that went south.

Most will cover up to 100% of the renovation costs and 70-90% of the purchase price, depending on factors like the type of property itself, your experience, credit position, and the lender’s specific guidelines.  

Our ability to offer cash and close quickly gave us an edge, allowing us to secure the property under market value and position it for a seamless resale.

Luckily you are in a better position than a lot of folks.I like the idea of paying a neighbor kid.

Once rented, refinance to pull out equity and repeat the process.

Since your tenants are on a month-to-month lease, you might get more investor interest if you position the sale as a cash-flowing property with flexibility.

If you can, it would be ideal to stick with the fire position until you can qualify for retirement pay because that is something you won’t ever get from being an agent.

I have 100% equity in a home valued at about 400k.

However if you are bringing no equity to the deal they might scoff at the idea.The other thing you could do is find someone who trusts you who has money and wants to lend it. ( Private Money ).