However, we often facechallenges in sourcing suitable properties through traditional MLS listings.

See the chart from Fair Isaac Company (FICO) below: FICO Score Pct of Population Default Probability 800 or more 13.00% 1.00% 750-799 27.00% 1.00% 700-749 18.00% 4.40% 650-699 15.00% 8.90% 600-649 12.00% 15.80% 550-599 8.00% 22.50% 500-549 5.00% 28.40% Less than 499 2.00% 41.00% Source: Fair Isaac CompanyAccording to this chart, investors should use corresponding vacancy+tenant-nonperformance factors of approximately 5% for Class A rentals, 10% for Class B and 20% for Class C.To address Class C payment challenges, many industry "experts" are now selling programs to newbie investors about how Section 8 tenants are the cure.

you also need to source the property, and for BRRRR you need a goldilocks property - something that is distressed enough that you can buy substantially below market, but not so distressed that it's not worth fixing up.hope this helps - happy to help further

And you still have $70,000 to go buy a single-family home or multifamily home, and now that you're on a bunch of wholesale lists where you can source deals well under market value it is easier to find good deals. 

The process must be understood and applied to team building, investing your and 3rd party capital, and financial deal structure with debt and equity sources. 

And to make a BRRRR work in the current market, you either need a crew that can do cheap work or a way to source deals.

Know this: the #1 reason why landlords fail - failure to manage to the lease (source:  American Apartment Owners' Assn). 

If you believe that is true, please cite a source.

I recognize this is not the sole source of return, but the other sources have their return increase with smaller equity position. 

I suggest you find other sources of income or partner on deals to grow your real estate portfolio.