.- I still like REI and want to diversity internationally.

It goes into median household income, education levels, school ratings and depending on the size of the city, sometimes it gives an overall grade for diversity.  

Low RiskBonds - Best/safest assets in a market - highly desirable neighborhood/school district with strong, diverse job growth, high quality building that's newer or has has had a full cosmetic and mechanical rehab.

To build wealth, you should be focus on diverse investments across all avenues available to you, but you'll find if you are good enough at it, that real estate will leave the others in the dust.

Bedroom Diversity/Breakdown: When looking at a Multi-Family Deal is there a target Bedroom Diversity: for example, how many of the total units are 1 bedrooms, 2 Beds, 3 Beds etc? 

And if you look at what's happening in Colorado Springs -- a strong government backed economy with a growing diversity of other economic sectors, a strong appeal to young people and coastal people with money, and a spillover from Denver's crazy market -- and you start to see a market that still has upside potential. 

Job Diversity: not sure where to find this type of info7.

@Lee Hampton I live nearby Montgomery which is one of the biggest drivers but on top of that here are some of the main reasons:1) Steady market with a diverse set of employers across industries.

@Jim Edelstein investing in a market with a diverse employment base will alleviate some of your concerns.

Also, you will need to determine what factors for a market matter most for you such as economic diversity, population growth, rent to income ratios, etc.. https://www.biggerpockets.com/forums/850/topics/895660-my-first-investment-property-an-out-of-state-dealBest Wishes!