Paid off rent house V.S. buy a duplex?

[Michael Bracken]

Greetings all, I have a really nice 1500sq ft 3/2 rent house. New roof, new HVAC. Swimming pool 😩Nice area, longterm renters. Paid 75k in 2003 6.5% Appraise for around 150k Zillow says 170k yea right. I got 39k left to pay on the note. Oh rents for $1350 and PITI $900 Do I... 1. Pay it off and max the cash flow? 2. Refi cash out now and keep the prop in this drunk appreciation Dallas market? 3. Sell it now and use the money for a 4 plex down payment in a market with less taxes? (Not Dallas) Help me sleep tonight, cause my head is spinning 🏡