Vet your contractors and hold them accountable.

There are many service companies that will manage seller finance notes including the payments, escrow accounts, and documentation. 

This will vary based on region but in general 2 – 5 points, 9% - 16% APR (meaning this is the annual rate so divide it by 12 to get the monthly interest amount), and documents fees can be from $600 – $1,900.

I've had a BiggerPockets account for a little while but wasn't active at all in the past.

I am also a huge fan of real estate and for the past 50 years there's been a way to combine both.By leveraging a Self-Directed IRA, real estate investors enjoy both the traditional advantages of property ownership and the additional tax benefits of retirement accounts, creating a powerful wealth-building strategy.

Historically this property has cashflowed, but not yielding an annual amount that's really making a high impact towards overall business growth ~12k per year.

Some costs are eliminated (such as 'soft charges') while others are accounted for in the interest rate. 

@Jim Stanley Keep in mind any expenses of your SDIRA asset must be paid for by the account that owns that asset. 

Of these professional wholesalers, nearly all of them will be well capitalized professional real estate investors or large businesses doing hundreds of deals annually with many years in and around every part of the real estate investment journey.

There are 20+ CPAs and accountants on this site that specialize in real estate taxation.