I upgraded mine but haven’t talked to the wife about including her yet because the family plan is for up to 6 so it’d be cheaper to just buy two individual subscriptions, she doesn’t really care enough to justify that much extra cost. Hopefully Proton adds another plan or two for groups!
I installed Mint this past spring and fiddled around with it briefly every once in a while but I’m not a tech guy so there was a little bit of a learning curve on stuff like getting a second monitor to work, stuff like that. I’m sure you’ve already found out that there’s TONS of documentation and forums for questions, it’s just a matter of feeling kinda dumb for a little while as you troubleshoot. I switched over to Mint full time a few months ago and haven’t looked back. I’ve still got Win10 on an extra hard drive just in case but I think more and more of reclaiming that space for Steam now, I don’t miss Windows at all