Insurance went down, which given the improvements you intend to make and increase in value, the insurance would naturally have to increase as well as it is now covering a more valuable property. 

NOI determines cap rate (a more commercial metric that lets you compare finance costs).  

They also have some 100% commission programs in case you ever become a more active broker.

So I went the complete opposite direction to a more active business- Airbnb.   

StorEdge is a more robust system w/ a lot more bells and whistles.  

At today's prices, you're more likely to get a better return either buying a more affordable home 5 to 10 minutes from campus that is on a good bus route to UF, or possibly a condo or townhome with low association dues.

My goal is to add more sources of supplemental income and reach financial independence sooner.For the time being, while I am still learning, I would opt for a more passive investing strategy.

This save your IRA a lot of money and helps provide a more comfortable and prosperous retirement for you."

Looking for ways to avoid these type of calls and get a more motivated call. 

ROI, is a more long term view that brings in your principal paydown and potential appreciation (Divided by the cash you have invested throughout)