I now live out of state, but I still have a 4 acre property near the crossroads (on 111 & near 77) in Lavaca County, TX that I need to do something with.

Start anywhere—offer to assist, intern, whatever it takes—and absorb as much knowledge as you can.

If it's uninhabitable or in need of major repairs, that's a no-go for DSCR. 

Too much effort and too much risk for the OP.  

Most are very much on the market and subject to bidding. 

@Vina Merrill,I don't have much intel on Knoxville, but I’m active as an investor, turnkey provider, and builder in Chattanooga.

There are plenty of calculators out there and they all pretty much do the same thing.

Pairing a smart lock, such as the Schlage Encode, with Hospitable saves so much time since Hospitable seamlessly automates door code management by creating unique codes for each guest reservation and then, subsequently removes the codes after the guest checks out.

I do not worry much about "hurried or sloppy work" because it is also in my contract that all work must pass inspection, which may include the city / county (for permitted projects), lender and myself.

I'll pay so much when demo is done, I'll pay some when painting is done, balance due when the job is complete.