Their recent firmware has made it pretty plug and play. Edge router has a nice wizard for setting up basic routing and the AC pro can be setup via their UniFi phone app. Shouldn't take you any longer than an hour to be fully setup.
This was a really nice experience. Just went through this as a total novice -- never setup these APs and I'm not super knowledgeable in this area, but setup was really easy via a nice iOS app. Important configuration options were all available and all 3 APs I'm running are using the same SSID with no problems.
