Your desire to ensure that you are making the right decision and to request additional time to review the property are reasonable steps, especially given your relatively new status in the field.

I have rented to non residents whose status was, well, probably not legal. 

Research the market to find favorable conditions, such as job growth, population expansion, and affordability.Assess your financial status and consider different financing options such as conventional mortgages, private lenders, hard money loans, and innovative financing approaches.

They cash flow from Day 1 and improvements can be made while the "guests" are on site. 

There were also clothes left over from a previous guest.  

If you live in one side and want to STR the other, that won't work because each unit is its own primary residence.That said, I have clients who have successfully rented out a guest house/ADU in LA on a short-term basis and since they occupy the main residence, they are not bound by the 120 day limit to fulfill the primary residence occupancy requirements.

Ive lived in the home for the mandatory 1 year to claim primary res status.

Newbie here.I’m curious of a possible situation where I build a small 2 bedroom guest house in my back yard for a short term rental.

It is on over 10 acres with a 6BR/7BA main house, multiple guest cottages, outdoor event venue, and more.

Im not sure about the increased "guest quality".