Finally switching away from Uverse to AT&T DirecTV Streaming

After having my most recent main DVR fail (Pace IPH8100) and have to perform a factory reset, losing hundreds of recordings, and having been told by the installer when I got the newer Pace DVR that Uverse was eventually going away and it wouldn't be possible to continue with it if we were ever to move, I have decided that since my DVR is nearlt empty this would be a good time to make the switch. Has anyone done this that could comment on the experience? I currently have the Pace DVR, with 3 Motorola VIP1200s and 2 Cisco ISB7005 wireless boxes. I assume I will be able to get those same type of boxes (wired/wireless) and I understand the DVR is in the cloud or something. I really don't have much information on the new system, and I guess I will have to call AT&T and inquire about changing. Just curious how much of a hassle it's going to be to switch.