I‘ve used Hershey Federal Credit Union for similar sized MFs I have in Harrisburg and Carlisle, PA.  

Let's say they pay you $2000/ month * 12 = $24,000/year.

I didn’t see your location in your profile or your post, but assume at least 17% state/federal taxes leaves you with $10k/yr. 

So now we cover utilities for both units and the new tenant pays a higher amount too on the back unit to cover all the utilities with a great profit.  

I don’t know when an LLC starts to pay off if you don’t have any partners.

Reduce the federal budget deficit to 3% of GDP, achieve real GDP growth of 3%, and increase U.S. oil production by 3 million barrels a day by 2028.For real estate investors, these plans could mean major changes—and opportunities.

For the 10 year period spanning December 2014-2024, single-family prices in Austin nearly doubled, yielding an annualized appreciation rate of ~9.4% in that period.With inflation close to its 2% target and an uptick in the labor market, The Federal Reserve may be taking a break from rate cuts.

We're trying to decide whether or not to pay it off or save to buy another property. 

I need to allocate a certain rent to pay myself as I use 2 offices working as a medical provider (another LLC).

Going to guess the $797 is rent only, with tenant paying utilities.