I just went through this exercise myself. 7800x3d with a 7900xt and Asus x670e-e mobi. My only recommendation is to make sure you pick a distro with newish hardware support. I started on Mint but had a lot of hardware troubles (mostly audio related) even with their newest kernel. Switched to Manjaro and the hardware issues were all resolved by the newer kernel and alsalib packages. Wasn’t crazy about their package manager though so I ended up on Tumbleweed and it’s smooth sailing so far.

I see no issues with your plan otherwise. The only caution I’d give is if you plan to get a beefier GPU later you’ll also need to upgrade the power supply, but looks fine with the parts you’ve picked.

So, I have the same CPU and memory, similar GPU but an ITX motherboard from Gigabyte (B650I)

So far so great, it's working without a hitch

And it's not only snappy, with the Noctua coolers it's very quiet, even with demanding titles the system stays quite quiet

If noise matters, you could probably find a quieter power supply. That Cooler Master looks mediocre in that department. Test results are available here:

https://www.cybenetics.com/index.php?option=power-supplies

You might have problems with the Realtek NIC. Look for a board with Intel networking

Do you really need all of those drives? You may want an NVMe drive, which will help the system well so much more snappy and load games faster. A 1TB NVMe is ~$80, which would be plenty for your OS and most (all?) of your games.

I think that's totally worth it, but YMMV.

Looks good but I personally would switch the CPU to a Ryzen 5 7600x and go for an RX6800xt or RX7800xt instead. Unless the games you play are heavy on the CPU usage you are likely to get way more mileage from a better GPU than the 3D cache and 2 extra cores. You can always buy whatever the latest 3D AM5 chip will be in the future when you feel the need to upgrade, or a used 7800x3D for a much lower price.