Have about 50k I would invest (access to more), with excellent credit and good income too, from my full time job.

No reason stated I had great credit score cash on hand excellent properties.

I have.) and 20 years of excellence at generous prices, all gone.

I prefer building my own spreadsheet on Excel and fine-tuning the specific expenses myself.

@Caleb Genry I also can use that awesome Excel spreadsheet sir> 

But she takes excellent care of them (even put in a small concrete pool for them to play in during the summer:-).

Hello Satish- the greater Banner Elk area does have a lot going for it and the right property should provide you excellent income and a potential nice getaway spot. 

It is not very difficult or complicated to evaluate commercial real estate, there are plenty of good books available that can teach you how, textbooks, online courses, community college classes, even excellent youtube videos etc, and it is actually quite enjoyable in the process to learn.

The interest rate is 2.375% so I am having a hard time letting go of the excellent rate.My question is: To scale from here, should I sell it and buy a fourplex as a house hack? 

Excellent so far!