Home office 2x double sockets, you’ll regret it afterwards.
In the office, I currently have one NW double socket and ran a SAT cable into the second socket, but haven’t cut it from the roll or connected it yet and I’m seriously considering installing 2x NW double sockets there.
Living room depends on the use case. WLAN is usually sufficient here, but I would still plan at least one NW double socket near the TV.
Personally, I install Ubiquiti Unifi Access Point AC Pro powered via POE.
Access points currently planned:
(* basement technical room)
* ground floor hallway
* attic
The routing function is handled by a Ubiquiti USG for me, but for most it is the DSL modem (e.g. FritzBox).
Repeater/Mesh only as a last resort when no NW socket is available, but you are currently planning those anyway. I personally would not provide power supply for the access points if the access points support POE (Note: Fritzbox – if intended as an access point – cannot do this by default).