The location you're referencing will likely require substantial rehab capital.There may be some out of state investor who hears NC and throws their money at a portfolio, but this feels like it'd need to be cash transaction.

If this is how it works, do I ever go through the title company like I would in a normal wholesale transaction?

This will lower your monthly living expenses while your tenants help pay down the mortgage and the house appreciates.

Then you can do a 1031 exchange or sell it at a lower tax rate. 

It's a great market for cashflow since it provides a lower price entry point and demand for rentals is high.  

I understand the rate is competitive on the assumable, but having $300k liquid, you might as well do a lower downpayment and Buy down the rate. 

To do a 100% BRRR the cap rate has to be lower then interest rate.

My go to for lowest hassles, taxes and  transaction costs are Lease Options or selling directly to the renters. 

@Kwok Wong With limited exceptions its customarily the lower tier neighborhoods that present both BRRRR and cash flow.

You have limited time to complete the transaction before the sale.