Update FYI:
Tests comparing Xfinity cable internet vs Verizon home internet turned out like you might expect. In the room with the routers Xfinity is faster, although Verizon is fast enough as there is no lag. Unexpectedly the Verizon covers our rather long house much better. The speed tests on the far rooms are won by Verizon, its speed are very consistent throughout the whole house. We have two extenders for Xfinity we won't be needing with Verizon.
YoutubeTV works great with Verizon. I'm watching the Kings play Miami on a recording.
It appears we will be canceling cable and returning their equipment on Monday and saving at least $100 a month
Thanks for all the input that helped us make the move to YoutubeTV and Verizon!