Some information I’d like to know to educate myself on the local market include:-Investor friendly real estate agent-A/B rated towns or neighborhoods-Cap rates in such areas-Typical vacancy rate used for calculations-Property management recommendations-Property management costs or associated percentages-Investor friendly contractor -Legal quarks unique to this area or Texas in general-Any other helpful information worth notingThank you in advance for your time and expertise.

Check with banks ahead of time, since this is a unique situation.You should expect slightly higher CapEx than if all 5 units were in one building.

Fayettevile is a fairly unique market with the Fort Bragg (Basic Allowance for Housing) component.

Access to price history on MLS should be sufficient for 99% of the time in these cases.And if it's a property that's super-unique, I'm not sure the history would help that much in determining value since, e.g. with ranches, the price is often determined by the emotions of the (in the case of ranches often wealthy) buyer.

Different vendors, depending on which part of town the project is in and whether the project can look like every other reno people are doing (Home Depot, Miramar-area standards - H Cabinets, Rainbow, etc) or needs to look more unique (Lowes order desk, La Mesa Lumber, couple random stores in National City-area).

It is a unique property and we spent a lot of time getting it ready, but essentially, we live for free because of it, so it is for sure doable. 

Are there any more unique aspects of foreclosure flipping in Washington State I should educate myself about?

Only a handful of people here have ever dealt with that kind of capital and the unique requirements that come along with that level of wealth.

An older home may have problems unique to an older home but a brand new home may have problems unique to a brand new home.If you are looking at a 1947 home, learn what problems exist with 1947 homes.

I use the teams I work with to get to the root problem and solve it by using everyones ideas uniquely.