Glad to hear the new router is working well. Going to AX from an N router is a big jump.

Leave "hide SSID" unchecked. It doesn't provide any extra security and it makes it more tedious to add devices to the WiFi network.

"enable wireless radio" must be checked if you want the WiFi to work. If you don't enable the wireless radios, then it's basically a wired router.

Other than that, you can just take the defaults.