I find single ADUs are mostly being added by people with minimal RE investment experience often without a clue as to the value that will be added by the adu addition.  

What's your experience level at this time? 

With experience, they have the right systems in place and know what doesn't work. 

This will be my first time purchasing an STR, and I have no prior experience.

Should I just jump into it and try to invest in my first property with not much experience besides the many investing books I've read?

Here is my list of the most dangerous real estate related investments for the “non professional” investor lacking direct knowledge  and experience in these investments 1.

I do believe we have a good property manager and the photos and description of the listing are well done, so not sure what else to do at this point.

This was a learning experience that will fuel many success to come.On the podcast you mentioned you were going to take a few months off.

In my experience, 75% of the time, the tax payer doesn't have a large enough liability to justify the accelerated depreciation anyhow- depending on your income and tax bill, it might not matter at all.

This has nothing to do with real estate experience.