Firmware and configuration for two RT-AC68U’s

I am moving from a 1000 sq ft apartment to a 2000 sq ft single floor house and I suspect I will need to use an additional router for Wi-Fi coverage.

Currently, in the apartment, the room with cable has a cable modem and an Asus RT-AC68U. This provides Wi-Fi for mobile devices and a wired connection for a Kindle TV. The router has a simple configuration. I don’t have any devices that are using 2G but it is enabled, and the SSID’s for 2G and 5G are different. Guest Wi-Fi is disabled.

I have...

Firmware and configuration for two RT-AC68U’s