I've been working on a software package I'm hoping to release in a few months... I'm really torn on either split FLOSS with commercial extensions, or just going fully private... I was planning on a pretty generous free tier, but hoping to make a bit on the side from commercial customers.
It's a bit of a niche as it is, so that's going to be rough in any kind of pricing model, as a large part of that niche is either homebrew types and the other commercial industry that will likely require some more integrations and customization.
You could dual license as well, so it’s GPL or AGPL for personal, OSS, or academic use, but requires a paid for commercial license for commercial use.
I suggest GPL or AGPL because their copyleft clauses make them hostile towards platform providers who might otherwise seek to profit from your work without paying.