You are only weighing the returns of each on a best-case scenario which is not wise.

Lender has risk if as @Chris Seveney mentioned buyer puts a second behind your first  this causes the first lender to have to go through a full foreclosure to remove the second in a default scenario. 

Like they want to file a Quiet deedRE is becoming over run with  OOS  BRRR ROI  COC etc etc.This type of thing is very common though in Aviation there is an abbreviation for nearly everything you do in Aviation. 

Would love to discuss your scenario further and discuss financing options with you. 

Occasionally, I speak with investors who prefer additional language stating what would happen in a scenario where they find their own property.Does your buyer agreement specify what happens if you find a seller directly?

Here is a common one I've seen stocked.

Another option to consider is using the space for Airbnb or mid-term rentals.Here in Texas, basements aren't common, but I found a home where the third bedroom had its own entrance right off the driveway.

And it appears that the amount of work is not high enough to hire a full time person.Does anyone have some good best-practice or ideas to show how you manage the work load and staffing for similar scenarios?

I wouldn’t say that’s a common start for most people though.Also, you are 100% right that 99% of people will do nothing even if you give them a roadmap to working for themselves.

A 75% cash out refi is more likely the higher scenario of the two, however when you do the refi they are paying off the total loan amount on the 12 month flip loan and netting the difference.