In addition to managing 65+ units in the greater Tampa area I also am a broker who almost exclusively represents investors buy the best available STR properties both on and off market. 

Exclusions etc.

My point is cash has no exclusivity on being legally clean and far from it.

Warranties often have limitations, like they might not cover pre-existing issues, and there could be delays if they require you to use their contractors.I'm not sure if you've purchased a warranty already, but before purchasing a warranty, it’s a good idea to carefully read the fine print to see what’s covered and if there are any exclusions.

I've been a broker dealing exclusively with multi family property over the last 20 years.Landlording is a tough job. 

Or, plan on this being a nest egg builder and growing your equity, living in the home for 2 of the last 5 years and then selling with Section 121 exclusion. 

I work almost exclusively with investors and a lot of times, out-of-state investors.

And if you have a bathroom adjacent to the bedroom you could close it off for exclusive use by JADU tenant.  

At the bare minimum, you should do the following to make your bookkeeping easier:Dedicate one checking account and credit card exclusively to real estate.

As an agent who has worked almost exclusively with investors for years, I almost automatically take the approach of saying “no” first.