I am in a position to begin building up my investor database beyond a couple of tier 1 relationships.

While I certainly see how cash flow enables people to achieve financial freedom; leave a W2 job, retire early, or allow them to chase any dream they might have.

There is no central database for whether STRs are allowed. 

@Taylor KleinThere may be some accelerated depreciation features that might enable a write off against other passive income.

If I invested in the LLC or loaned money to the LLC which enabled it to buy property, including the one I end up buying back, would that be a problem?

The databases often have inaccurate or outdated home information, and are not able to take into account value-heavy features such as floor plan, neighborhood, exterior appeal, interior flow, kitchen and master bedroom space, interior light, ceiling height, yard appeal, proximity to features that are positive or negative (park vs. apartment building/auto body shop), plus condo dues, amenities, and/or litigation status, along with many other things. 

Have you listed with a local agent to get placed on the MLS or used other means (the available database websites, social media, create your own website, etc.)Thank you for your help!

If you become a specialized professional such as engineer, lawyer, accountant, or some sort of medical professional your potentially high career earnings will enable you invest in types of hands off RE...or hands on if you like. 

Its value is in enabling you to live you life to its fullest, no matter how you define it.

For us, frugality is the method for enabling accumulatIon, rather than leverage.