Where to get the most recent and accurate data for things like:Unemployment dataPopulation growthJob diversity and top employers in the areaVacancy rates (eg huduser.org)Property taxes and jnsurance costsI saw bp pro and reventure and a bunch of other websites provide some of this data, but i wonder how accurate and recent it is.

Quote from @Robert Bell: Memphis has had a favorable rent to price ratio for a long time. 

If have investment property, we are looking for relatively updated units (we are ok doing some work ourselves), class C+/B tenants, with rents either close to market rate or that can be increased.

Many months of costly vacancy, local market rent & resale deteriation, special assessments, property taxes and maintanance fees suggest a quick sale would have been the wise thing to do 2 years ago.

Buy: Finding the Right PropertyThe first step in the BRRRR method is to purchase a property.

As David indicated, look for properties before you close on the sale of your relinquished property. 

I make loans on Memphis properties for investors.

For example, should we focus on acquiring one high-quality property in a strong market, or would it make more sense to spread the investment across multiple lower-cost units in emerging areas?

HOW MANY RENTAL PROPERTIES DO YOU OWN?

Then you can read a more in-depth book like The Book On Rental Property Investing by Brandon Turner or The Unofficial Guide to Real Estate Investing by Spencer Strauss.2.