Your best option is the Sonos Connect that will allow you to wirelessly connect them to your setup. I don't remember if they are out yet but the Sonos Move product will support bluetooth as well as their wireless setup. Seems a bit pricey though.
RapBeautician
had a setup like this. bought a sonos connect and everything. not worth it. sold it all on ebay and getting 1 or 2 google home max(es).
Your best option is the Sonos Connect that will allow you to wirelessly connect them to your setup. I don't remember if they are out yet but the Sonos Move product will support bluetooth as well as their wireless setup. Seems a bit pricey though.