new setup

just received new orbi set up with extra ac2000. before setting up, wanted to see if anything special needed with my current setup.

not with UVerse, but am using ATT for internet/phone/etc. I have the Arris NVG599 with a single extender. If as easy as "follow instructions on app" then great. but if i need to make any adjustments to properly install, any help is appreciated. thank you.