I have 1Gig Fiber connection. I have Eth0 as WAN. Eth1 is LAN connected to a Asus XG-U2008 unmanaged switch where all the other wired devices are connected to. ( I do not have that many devices, 9 wired, 7 wifi)
My Asus RT-AC86U is now just a AC WiFi AP. (running Merlin Firmware)
the item you’re installing weighs 57 pounds or less, an A5 anchor is suitable, which works with a #8 sheet metal screw. An A6 anchor holds 69 pounds, while an A8 can manage 85 pounds.