@Kevin_Z Can I use any of the TP-Link extenders for that? Would be good if I could monitor/setup both the existing devices and the new extender(s) via the one dashboard.

I recently bought the AV1300 3-port Gigabit Passthrough Powerline ac Wi-Fi Kit (TL-WPA8630P KIT) which works great for both wireless and wired devices. For some of the other rooms I would like to...