I agree with starting with what you have to get learning, but I wouldn’t run a Minecraft server on this machine. I’d start with everything else and then buy an old office machine to upgrade. It depends on the unit, but they are easy to upgrade basic upgrades like adding RAM, storage, and possibly a low power graphics card. Since most servers are always on, keep an eye on power consumption with a power meter.
I’ve seen some interesting development with Music Assistant but I haven’t personally used it. It’s not sure if it can be commanded using the cast button.