My priority would be to put more resources into the audio interface, controllers, and storage. I think you'll be fine with just about any modern build. Maybe lean towards the quietest build you can make.
If you're serious about your work, I would do a separate drive for storage of your media. Keeping the project data off of the OS drive. I'd even do a backup drive. I don't think there will be a performance benefit. I just prefer a neat file system. Especially if you're working with audio clips. Audio files don't take up a crazy amount of space. I feel it's important to have backups if you're collaborating with others.
A developer wanting to get something in return for their work is a reason. It's also an option for the user. Sync offers a one time payment for Ad Free and for their "Plus" features. It also has the option for a monthly subscription.