I love that I just download the app from the dedicated place, no pointless web surfing for the latest versions.
IMO this is a huge thing, Linux actually does a lot better than Windows. I know the Windows Store exists, but it is lacking in lots of ways.
A new PC upgrade is on my list after building a NAS and I have almost the same parts on my list, just as regular ATX. Maybe look for a good deal on a WD Black SN850X as a small upgrade over the Crucial NVME.
I will be going for the same cooler as well, since I don't see the value in an AIO solution for non high-end CPU. The downsides outweigh the superior cooling at that wattage IMO.