I have a NAS at home I can easily back things up to. For limitations on the OS I do intend to install Windows on it on a separate partition to keep things clean when it comes to SteamOS so I don’t think the RO will be much of an issue.

I’m happy to hear about your feedback to it playing 4K video with no issues and that it works lagfree on 4K too. That’s been my main concern if I end up getting a 4K or 2K screen to get my more standard resolutions available that the hardware would potentially have a hard time to catch up if I have a few processor things running at one go like a video stream in the background, editing a document and voice chatting at the same time and then on top running Lightroom to boot. But from what I can gather from user experiences it shouldn’t be too much of an issue!