Linux

I can confirm focusrite scarlet interfaces work fine, and the uv1 should be fine as well but I don't have one. You may need to get familiar with the Linux audio landscape. VSTs mostly work these days, although I only use foss VSTs so maybe commercial ones have their own caveats.

For pro audio you should be using JACK to connect your sound devices. These days if you run a system that uses pipewire, pipewire can pretend to be a JACK server just fine. I like to use QJackCtl to set up Jack environments, although its not necessary because many DAWs are capable of setting up in the application.

For a DAW I used to love Ardour, now I still like it but am sad that it has been crashing often for me. I don't use any of them but there are some well liked Linux daws like reaper.

You may have trouble with recording without a preemptable (aka real-time) kernel. Afaict this only matters on lower end computers or when you have a lot of live plugins running, but using a kernel with this feature just means that more kernel code can be interrupted to handle things like fresh audio data arriving over USB.

Mostly, you'll need some time to get everything working how you want. I agree with the recommendation to use a separate disk in your existing computer for Linux, or get a whole separate computer. The nice thing about using a separate disk is you can know for sure your windows setup is available if needed. For me I slowly left windows behind, only realizing later that it has been a year or more since I last fired it up.