Which Access Points for my new House and my Flint 2?

So I will move soon to a new house from my apartment.

I have a flint 2 and I am super happy with it. So I definitely want to keep that piece of hardware as my brain for my new home network.

The question is now only what kind of Access Points I can add to my flint 2 to provide WiFi for my big house now. The flint 2 might cover all locations but I want to have fast stable wifi everywhere.

A new dedicated system like Ubiquiti or Omada is out of the question. I really like the openness of OpenWRT and dislike the locked ecosystem approach where you need overpriced switches, routers etc.

What I see is that I can still use flint 2 as my brain/router.

From there I would connect a 8 port PoE+ Switch:

Zyxel XMG-108HP

For access points I need PoE powered access points which are wall/ceiling mounted with PoE. My wife does not want to have additional WiFi hardware standing around.

So they need to look good and should be future proof. I identified three 3x AccessPoints as a candidate:

Zyxel NWA130BE

Is this a good setup? Do I miss something? Can this combo work?

Can I run the three access points as a mesh network and provide WiFi where the WiFi on the flint 2 is turned off but I use it as the brain of the network?