If you have not already, I highly recommend expanding on that goal, really working out the details of where you want to be in 10-years (develop a vision).

This will help you develop a plan to get there. 

I am evaluating a few options to improve this situation, one is "status quo" i.e wait another year and then decide since the next rent increase will improve the situation a little, two is to add a detached ADU which I have researched to confirm both feasibility and strong economics, and three is to see about selling the property as a development lot for multifamily, then using the proceeds on another investment. 

Non ad valorem would be taxes that are evenly applied to all properties regardless of value on a per-property basis, commonly for community road improvements, new fire stations, CDD (community development district), or other items like that which impact a small part of the county which those seeing benefit repay over a period of time.

Looking for active investor/flipper/wholesaler/developer in the Jersey area .

However, I developed my game plan in 2013.

Hi - I have a development deal I'm working on in Eagle and would be interested in collaborating with local investors.  

I got a contractor lien on my development for 32,000.

Great developing area, good for growth.

By process of elimination (and with the help of a good inspection) you'll be able to develop your own list of projects to work on.Hope this helps,