OK, here is what I'd do...forget the wiring and go all Sonos. You can get the Sonos Beam soundbar for $400. The sub is more like $750, but you don't need it unless you really want to thump the bass. IKEA makes a Sonos compatible bookshelf that you can get for around $150 each that you can use as surround. That should cover your TV room. But then you can add more speakers around your house. I have a bunch of the 1SL speakers (around $200 each) and you can play any or all of the speakers at once. So all of a sudden, you have whole home audio with no wires...all you need is an outlet.
I have the soundbar and bookshelfs in my basement, but then the 1SL in the kitchen, living room, office, bedroom and one hanging out on the patio. You can play different things on all of them at once or all the same music at once. It all goes through your wifi, and you play everything through their app, so you can play Pandora, Spotify, Apple Music, Amazon, etc.