Outside of the kry metrics one needs to evaluate when investigating any market, I also created a list of priorities and nice-to-haves.

Save the thousand dollars.Look up the SEC investigation @Carlos Ptriawan 

I ditto the above comments to investigate MTR property managers, as well as tax consequences.

I am a solar energy specialist and know the ins and outs from the preliminaries to the set up and the final stages.  

@Shrikant KakaniTo identify the best real estate investment market, investigate secondary and tertiary cities in the Midwest and Southeast.

One red flag is if the property is being marketed heavily by unregistered regular broker , that’s what happened in my Ponzi scheme fraud.as the result of investigation those marketer now has to return all their commission to SEC. but at the end this turn out to be good because asset value is increasing compare if I invest to office building and lost all my money.  

You probably need a lawyer and to investigate the current state of the bankruptcy proceedings.

I'm trying to learn what all I need to be investigating when analyzing a market.

If you are going to expand your market or consider bigger properties, I suggest you investigate some multi-family training programs like that offered by @Gino Barbaro. 

This links to the system design.Here is my guess regarding the system size trending (I might be wrong) - Most of the developers I have got in touch with (at lease in CA) are still interested in 1-5 MW projects as more and more transmission project suitable lots were taken/investigated/too expensive to construct.