I've read quite a bit about the Raleigh Durham area RE market blowing up because of all the corporations that continue plans to move/grow there; the eye catching announcement a while ago being Apple with their 10 year plan of adding a few hundred more employees each year.

Check with your insurance company first - they might have an opinion on what you are planning on doing

It sounds like you got lucky and the process was quick and went according to plan.

PM teams should be adding incredible value to your overall business plan.

I plan to do the BRRRR method (They are in their early 50's so they have about 15 years or so before we would want to sell or I buy them out of their properties for retirement) .Thank you in advance for any advice! 

It could be a good fit for you.

After repairs I plan to move out possibly owner financing another home and renting out current home.  

Make sure you get a "Release Fee" on each property; this is an amount that is to be paid to release a property as collateral in the event you need to sell, or if you have an insurance loss that insurance proceeds will be applied to the subject property and not to the whole loan keeping you stuck with an encumbered damaged property, remember they don't make construction loans as a second and the blanket loan won't subordinate (usually) to another lender, it could get messy, so have a release fee stated and understand how payments will be applied.A line of credit is not a blanket mortgage but a line of credit can use other collateral, different animal and it may or may not fit you needs.

I fully plan on 1031-ing every property I ever own as a rental, so I'm not concerned regarding depreciation recapture.

I am definitely considering buying a home and renting it to other travel nurses/doctors, but I would like to make a more well thought out plan, and realize I am still a ways off from actually buying.