Proper underwriting - this includes an appraisal, loan app and full underwriting to comply with CFPB regulations.2.

Preforeclosure owner finance wrap, paid off the default payments and taxes with cash and assumed the owners loan.

The reason is because the companies that back these assets, and some others, have a 1:1 between their tokens and the USD (I'm unfamiliar if EURS, THKD, and stables of other fiat offer 1:1).A possible scenario would be that you offer the seller to pay in a stable coin, like mentioned above.

Are you familiar with Creative Financing such as Subject To (SubTo), SubTail, WRAPS, Short Term Lending, and Bridge loans? 

You would need to hire a leak detection company to find out. 

Can you be financially free, sure, consider if you are buying real estate you will no longer have stable income to get a loan.

There are DSCR lenders will allow only a single 20 or 25% owner of an LLC to sign a Personal Guarantee (other owners are not on the loan, or liable for the loan).

Will he and potential buyer of the property be subject to Commercial financing or will the property still qualify for residential 4 unit and under loan types/primary?

That is usually how they determine your LTV (Loan To Value).1.

Also, with a VA assumable, if the one assuming the loan is not a veteran, then the seller (veteran) entitlement will still be tied up in that property.