While this will work, wireless ac 5ghz bands may not have as strong a signal as older 2.4ghz standards. I've found it to be better to use a seperate ssid for devices that can use 5ghz ac to force it to use it. Using the same ssid for all your bands can cause your devices to connect to the 2.4 ghz bands as 2.4 ghz call be detected as a stronger signal. If imagine the same is true of ax bands. For the most part, the difference in bandwidth makes up for the somewhat lower signal strength at my home.
That said, unless your internet is fast enough to make use of wireless ax speeds, the only improvement you will see is when transferring data within your home network. I probably won't make the switch to ax unless faster internet becomes available in my area or my current ac router dies and I find a good deal on one.