My bet is you do not get sued.  

No Specific Performance": Without the remedy of specific performance, you can’t require the seller to clear the title and complete the sale.

Those stilled cashflowed mostly due to insanely low interest rates.3) Investors started chasing Class C rentals in 2022 when Class B rental prices AND higher mortgage rates didn't allow cashflow at purchase.4) Investors are now chasing Section 8 tenants as the cure-all for Class C tenant performance issues, so their Class C properties ACTUALLY cashflow.

If you're looking for the cheapest route, conventional may be a better bet.

You could just invest in a fund that should out performed what you are doing. 

I bet that you can pay off this debt in 1 year or much less.

I’ve found that C to B-class neighborhoods tend to perform best for Section 8 rentals.

Turning a historic duplex into a high-performing asset while forcing $100k in appreciation is no small feat—seriously impressive. 

Tell her George at Illinois REIA recommended her.That being said perform your due diligence.

If you get a quote significantly below the numbers above you need to ensure that the contractor will actually execute the work and perform it to the required standard.