You could take the equity and build a site with smaller cabins in a new area to really maximize your cashflow and efforts. 

I've spent quite a bit of time experimenting with a couple of these sites lately.

I've heard of mentees who started cleaning up construction areas on a flip at the end of each work day or picking up supplies at Home Depot and delivering them to the job site.

I watched my parents flip houses since I was little and have always been on job sites or made "pocket money" by doing chores like painting fences or washing kitchen cabinets, which I realize now my parents were putting us to work to build that sweat equity.

Another thing I've done is to go onto STR sites, and check out a couple things.

You can check out sites like Zillow or Redfin to see what houses are selling for and what rental prices look like in your chosen market. 

With the wealth of information available on BiggerPockets and numerous other sites and books, I'm not sure where to start.

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

I'll try to post it separately because I can't remember if specific company names are prohibited on this site.

You will be too detached.5 is required in some states and not in others so a lot if left to your viewing on-site so if you are not seeing it in person, you need full photos and videos of every part of the basement and attic so you have an idea of where the trouble lies before making an offer.