A really successful RE investor has many years and years of contacts and relationships in their city city, title companies, lawyers, expert construction crews, cheap materials suppliers, good rep so tons of people send him deals. that's a big part of being successful.

In a market like Arlington you should have some good wholesale flooring suppliers.

Last suggestion is to find a couple chemical suppliers in the area and talk with the chemical reps.

More importantly, a number of the suppliers that serve VW also serve BMW and Mercedes. 

Many suppliers, vendors and loan companies don't like to do business with LLC's because the LLC attempts to make officers not liable for any debt.

For electric, there may be options for which company generates your power, but you are most likely stuck with PSEG for transporting the electricity from the supplier to your property.

Direct message me on BiggerPockets and I can give you some suppliers, or my go to supplier for most of those items.

The idea of having military base as one of the main suppliers of renters was intriguing.  

I am slaving away my life as an Application Engineer for a German automotive supplier.

Those are made by the suppliers.