Am I overestimating costs or are my numbers a good safeguard against the unforeseen when running a projected deal?

This just an extra safeguard for you.

Here's a comprehensive guide on what property managers should do when facing such a scenario, including practical steps to take and effective communication strategies that can help alleviate the financial burden on the tenant while safeguarding the property's financial stability.Open Communication Channels:To effectively address the issue of increased expenses, it is important to initiate a constructive and open conversation with the tenant.

Property managers hold a key position in the process, as they are responsible for ensuring that property owners can maximize their returns while also safeguarding the overall financial health of their investments.

Safeguard your own interests.  

This is another safe guard to know your not overpaying.Understand this is a get rich slow game.

In the end, as heads of our respective households,  we should always do what we can, with what we have, to keep keep our families/loved ones safe guarded from such bad possibilities.  

An identification number for a U.S. person is a taxpayer identification number (TIN) (or evidence of an application for one), and an identification number for a non-U.S. person is one or more of the following: a TIN; a passport number and country of issuance; an alien identification card number; or a number and country of issuance of any other unexpired government-issued document evidencing nationality or residence and bearing a photograph or similar safeguard.

Airbnb has already put in several safe guards by collecting occupancy taxes on city and states behalf.

To achieve your objectives and safeguard your assets, you must organize your real estate company properly.