You should do some research before you abandon your existing TV Setup.
You should investigate TVfool.com or antennaweb.org, to see what over the air channels you might possibly receive.
To confirm what you find on the above websites, buy $10 rabbit ears, hook it up to the coax connector on your TV, change your TV tuner to “Antenna” and see what channels you receive. Reception doesn’t have to be perfect, a better antenna can be purchased later.
Best to try a Tablo Setup or just your Over the Air TV Set up (without a Tablo) with a better antenna, BEFORE you abandon your current setup. That way, no regrets.
I setup a Tablo, fine tuned the Antenna, Ethernet Settings, Streaming Boxes etc for THREE Months before I cancelled my Verizon TV Service (my contract with Verizon was up by then).
I wanted to make sure the New system worked before burning bridges.
I now have TWO Tablos, EVERYTHING is great and have Not regretted the decision.
Chas