Ok so here are some comments, focusing on the existing systems, and add one:
TV Provider: Sling
I forgot about this one, but it's a big part of a house. We've been limping along in the apartment with Spectrum on a limited package (10 channels) plus internet. We tried Disney+, up until the Gina Carano shenanigans. We joined Hulu on a special $1.99 a month; that promo ends this December.
I happened to be looking at my Verizon account and noticed they had a special on SlingTV; free Orange or Blue or $35 off Blue+Orange for two months. I checked for comparison of basic cable at our new place, and found it started at $89 plus $5 for a cable box.
So I ordered Sling. I'm very happy a day in. It offers around 50 channels, including some of our favorites (hint: HGTV). Plus some sports networks (I see the British GP is on this weekend) as well as 50 hours of cloud-based DVR. I think this will work out very well for us.
Whole House Audio: Sonos
We've had our Sonos system for about three years. I really like it; we have an older Playbar as well as a Sub, and a couple Play:1's. The system auto-detects various inputs including if we get a movie from Redbox to generate decent 5.1 sound. I'm sure you can spend a lot more money for less distortion but "to me" it sounds great.
I've also setup Pandora as one of the services, so it's typical for us I set up Chris Botti collection to run free playing tracks for The Boss (she likes that guy).
I'll probably get a couple more speakers, or at least one more, and set it out pool side.
One thing about Sonos I don't like is that it does not seem to have the ability to split the speakers into logical "rooms", which would be incredibly useful.