Not a great idea in my opinion unless you are on line 24/7 with starlink. Cheaper portable speakers that can be matched for stereo is best option in my experience ot opinion.

I’d look at the Sonos that offer Bluetooth and a Line-In connection for music. You could stream when you had good Internet and connect locally when you didn’t.

For TV sound you’d have to add one non-surround Sonos to the set to be able to connect to non-TV sources locally.