Your best bet would probably be finding a GC in/around Memphis who would travel to Helena.

;) I bet the Bel-Air mansion is also in the name of a trust or LLC, and I bet it is in a different name than any other properties they may own ... rich and famous quickly learn how to become rich and anonymous, but the truly smart rich folks never seek out fame in the first place ...

Its one of those things that people consider a "safe bet", but we all know that can't be true since almost everyone thinks that way.

Is this an actual disclosure that is available freely for me to give to my tenants, or do I just say "Go to the web to better understand the landlord-tenant code?"

You should be able to check a properties specific tax history on both the county assessors web page, as well as on zillow. 

Your best bet for a mentor is anyone that you have done work for that has multi-family properties, or is a real estate investor.  

That being said, the purchase price is below $100 per square foot and I am betting the steady flow of increasing population to come to the Houston area as it has for the past several years.

That would be your best bet. 

I think you best bet It's to find a duplex to investing in house hack

I would bet that the majority of people who fear market fluctuations are people who are not at all, or very little invested in the market.