You need to calculate the time to break even on this, and consider if you will live in this home in 1 or 2 years from now.

This is an expectations issue, not a calculation one.With that said, you need to be looking at properties where you can add units and/or bedrooms.

All REITs are required to show their FFO calculations on their public financial statements.

Here's a bit more in detail about how rates are calculated for DSCR loans:1.

Here's a bit more in detail about how rates are calculated for DSCR loans:1.

If you are purchasing as a long-term investment rental property, use the BP Calculator to plug all the numbers in to see if it makes sense.

Here's a bit more in detail about how rates are calculated for DSCR loans:1.

As for your other questions:It is currently on the market and has been so for several monthsI don't have anyone representing me yet...trying to learn as much as I can before taking that next step with a realtorI don't know why the owner is sellingI don't know the standing of the tenantsRent appears to be at marketAssuming 10% vacancy rate, my calculations show that it would indeed cashflow.  

It is just a calculator.

When your tax professional calculates your UDFI tax, you can obtain information from the asset sponsor for potential write-offs.