The simplest way to setup your new router is to use the same SSID and password. All your devices will connect without issue.
I suggest you power down (unplug) all Sonos devices before removing your old router. Once your new router is setup with same SSID and password plug in your Sonos one by one and let each comeback. Open the app and you should see all your Sonos.
You can also follow the official Sonos setup here for a new router ( if that makes you feel more confident).
https://support.sonos.com/en-us/article/connect-sonos-to-a-new-router-or-wi-fi-network
Together Everyone Achieves More = T.E.A.M.