These are professionals with additional training and a stricter code of ethics.

From one cow versus 100 cows trimmings, and a $1pound cheaper. 

Also, if a few hundred dollars in draw fees will make your deal go sideways, it may not be the best deal for you, especially as you are just getting started.I'm happy to share my experience as an investor and a mortgage broker.

Still have a lot to learn and a lot to ask before I'll be ready to start though. 

Down payments on DSCR purchases can be as low as 15% right now, and as you noted, they don’t impact your DTI.

An experienced agent will list your property with the language, "no showings until an accepted offer", to avoid violating your tenant's rights to the peaceful enjoyment of their home - possibly resulting in their lack of cooperations and a lawsuit against you.

But more for you so that you are not left with a lot of money out and a loophole for the other partner to get out of the agreement and not have anything to go after them on. 

I have financed a number of STR properties and they will usually be appraised as a pure real estate as vacant value and a cash flow adjusted commercial value, sometime separated as going concern and real property.  

At minimum, I am looking for the name of the deceased, a name of the personal rep/heir, and a name/contact for the attorney involved. 

A colleague of mine has bought two properties owner-occupied back to back in Arlington (with a 5% rate and a 7% rate) doing basement conversions and renting rooms, lowering his effective monthly payment on each property to sub 2K each time.