These are all very very different assets and require very different expertises and experiences.

As long as you operate a legitimate business and observe the corporate requirements you should be fine from that standpoint. 

Expanding your network requires a multi-faceted approach, combining both digital and traditional methods.

I’m looking to buy it as an owner occupied primary residence while living in another state but I am open to moving if it is required.

However you likely cannot refinance for a year if you complete a quiet title because most lenders will require title insurance and providers typically won't issue it until you own the property for 1 year even if you complete a quiet title because the tax sale process is so messy and prone to issues.

If you want to provide proper notice (ie: you don't get a response from a txt) that proper notice in Washington state requires that a notice be "served" Guidelines here: (also keep in mind that date of service is day zero)How to serve a notice1.

Hold it for forever, refinance as required to tap into equity and continue to grow our little portfolio.

You'll do this for everything in the home that requires replacement: interior paint (4 years), flooring (12 years if you use 12 mil LVP), roof (20 years), hot water heater (10 years), oven, washer, dryer, garbage disposal, microwave and so on. 

@Lucy YenA calculated strategy to creating wealth and cash flow is required in real estate investing.

Those make you better cash-flow but it requires a bigger initial investment because you renovate upfront and furnish it.