Lots of factors in every location. 

You are working a demanding corporate job but also want to build rentals on the side.

@Gustavo Delgado Tax Saving is one of the factors people consider while investing in RE.

Reinvest profits, stay patient, and keep building toward replacing your income.

It's a business - acquiring/building, managing, and growing a business. 

I would definitely factor in some substantial capex/ maintenance and repair costs which could lower your returns.  

As such, just upkeep and maintenance of the yard became a factor in deciding to sell.

Quote from @Kolby Knickerbocker:  Have you considered building here in Central Oregon or an STR here? 

Build and nurture those relationships. 

New occupants will be coming soon, but in a 3 family, i have set of excellent student tenants that renewed.That said, many landlord insurance policies have exclusions for students, so I am trying to gather info on updating a policy to consider the fact that the building is only going to be 33% student occupied.