It may be that I don't understand your question but are you talking about using MoCA adapters to wire your Access Points to your designated Google WiFi router? If so, that should be all fine and good. In fact, my view is that if something can be wired, it should be.
If you aren't daisy-chaining the AP's to the Google router then you will need to have them plugged into a switch with the Google router in between the switch and ISP modem. That way your router is acts as the master. I honestly don't know what engineer at Google came up with the daisy-chain idea but it is dumb. No one wires a network that way.