He is a military veteran, specializes in REI, and can operate in all states.

Or you can hire a local lawyer who specializes in landlord tenant law to assist you. 

It's worth noting that interest rates are super-low right now; about 0.5% for a high-yield savings and not much better in the bond market.Older Americans with cash in the bank who are leery of investing in the stock market at their age may perk up at the chance to invest with you by "being the bank" on a 20 or 30 year mortgage at ~4% compounding interest paid monthly.It's worth pitching the idea to people in your network and if someone bites, have an attorney and/or title company draft up the documents giving them a lien on your property.

They have a library of info on different subjects, specialized info on specific items like structuring entities, trusts, asset protection, tax, etc.

Call a lender that specializes in Non-QM loans, they will have these programs. 

The best property managers tend to specialize in a specific market/niche so a lot depends on the location within STL metro, class of property, etc.

The very first thing you need is to speak with an attorney who specializes with Syndicated Real Estate.

Both, there are sites like funrnishedFinder that specialize in 30+ day furnished rentals and  AirBNB also lists units with minimum of 30+ day stays.Note I have never used a 30+ day rental (either as provider or tenant).  

The stars aligned in such a way that I had both the income from work, specialized knowledge in property insurance and an opportunity to build a partnership with a home-owner.

Making constant patch-up and quickie repairs ultimately invites disaster,  or results in property falling into 'handyman special' condition territory.