WiFi Suggestions - Need a change

Hi folks, I'm looking for recommendations. I'm moving house soon and my home network set up will have to change.

My home is currently wired with Cat 5, has made it wonderfully simple to ensure there are no dead-spots in my house without having to compromise on Wi-Fi speed. I just had access points around the house that allowed my family to roam around without anyone complaining about signal.

I have:

Max speed fibre from Spark

Ubiquiti EdgeRouter PoE 5

A static IP from spark

A plex server that is accessed both internally and externally

A number of Apple airports: 1 x Extreme, 4 x Express - all LAN connected (I got these years ago to stream music around the house, long before the advent of Spotify and Alexa, and now they are used purely as access points on the network and still do a good job of that)

Anyway, as I said, all about to change. The next property does not have cat 5 around the house. And I definitely do not want to use those Airports as wi-fi extenders. I'm trying to decide whether I get myself Google WiFi 3 pack as I have heard they are simple to set up and provide good range. I could have one connected directly to the existing router, and then simply distribute the other two wherever gives best coverage around the house, or... have the main one as my router and no longer use the EdgeRouter.

I'm wondering if any one has a recommendation based on the above scenarios? i.e. problems when using Google Wifi purely as APs, whether it would make more send to replace the router in that scenario, working with the fibre model at max speed, working with a fixed IP etc?

I'm after low maintenance as that is what I have had for the past few years with my current set up.

Any help appreciated.