Google wifi system for isolation?

Tinkering around some more with the networking in my house. Moved from Netgear to Cisco switches - made a big positive improvement to the noise floor.

As an experiment, I disconnected the cable from my wireless router to the switch that connects the UnitiCore and the streamers. Again, a solid reduction both in noise floor, as well as in some hotness in the music that I've gotten used to, but am glad when I don't hear it.

Question - as a means of isolating the router+wireless unit from the Hifi system, and at the same time, to be able to control the streamers via my cell, has anyone experimented with the Google wifi system?

Here's what I envision:

Cable modem connects to Google Wifi Unit 1. This will be plugged into a switch that is connected to non-HiFi gear in the house.

All HiFi gear will be connected to a different switch, which will be connected to Google wifi unit 2.

The idea being to isolate the Hifi system from non-wifi components, and also from the Cable Modem (which is plugged into Unit 1).

Thoughts?

At this point, I often wonder whether I should have stuck to the CD5XS into nDac instead of getting into streaming. Vinyl via the Rega TT is fiddle free in comparison - and has a lower noise floor than the streamer based systems.