The only caution I would provide on Framework is their relative lack of BIOS updates: https://arstechnica.com/gadgets/2024/04/frameworks-software-and-firmware-have-been-a-mess-but-its-working-on-them/
They don’t have a BIOS updater for Linux (yet) and they have a history of overpromising stable updates. I get they’re hamstrung by upstream providers, but it’s a bad look on them to basically deliver a promised Thunderbolt update 1.5 years after announcing it. The CEO did say at least that they’ve hired on a new development team to get things moving, so hopefully they’ll be able to catch up.
Everything else I’ve heard about Framework is stellar.
I’ve recently been working on this kind of migration as well (but to Fedora instead), so I can speak from my own experiences:
This is my own personal (and recent) experiences and I’m pretty new to using a Linux DE for a main OS too, so anything I say could be incorrect and I welcome suggestions/corrections.