This is why Debian is my server of choice, and my work desktop of choice.
OP, There are some flavors of Debian out there that are more rapid release, like LMDE, Siduction, Sparky, even Kali (though I wouldn’t recommend Kali as a primary desktop personally). Some based on Sid, some based on Testing.
Studio monitors are excellent choices, but expensive. I’ve used genelecs for pretty much every audio workstation I’ve ever done, I’m a huge fan, but you’re also talking $800 and up.
You can sometimes find a good deal on some used studio monitors, which to me is the way to go. A long ways back I decommissioned some genelecs for a studio (surprise surprise, the new studio had newer versions of the same model), and I’ve been using them since at home. Roughly 15 years now.