Honestly, I’d ask what your expectations are for TV/movie listening and also music. The Sonos surround setup is quite rigid and doesn’t lend itself to reconfiguring easily for listening to just music. 

If you can wire, I would seriously consider a non-Sonos AV setup with discrete front speakers. Things like Atmos will be much better, and the system in general will be more flexible. You can add Sonos into it using a Port for streaming. 

Thanks for the reply! I just wanted something a bit better than a soundbar on its own for the TV. For music I was just keeping the Sonos 3 in the kitchen/dining area. Would probably wall mount it somewhere so it is out of the way. It is easy for voice control streaming via Alexa. I will look into a different system for the TV.

 I’m using an Arc-Sub 3-Era 300 pair.  Yes the Arc soundbar compromises the SQ a bit for stereo music.  I wish a setup of 5 Era 300 speakers was possible.  Yet, when the speakers are setup properly, TruePlay is executed, and Surround Audio / Music Playback is set to Full the stereo music sounds pretty good.  If you subscribe to either Apple Music or Amazon Music Unlimited you will have access to Dolby Atmos music.  This is where the described setup shines.  If you’re into classical music it’s definitely worth the upgrade to that system.