Gaming is the only area where things might get tricky at all, every other area will pretty much just be a matter of getting used to different UIs.

Whether or not you find it sufficient for your gaming needs depends mostly on what types of games you play. If you’re always playing just the newest AAA titles, you might have some trouble, but there are a whole shitload of great titles that work perfectly on linux, and more are being added/ported every day.

As far as distro goes, I think Mint is a good choice for what you describe, you could also try one of the gaming specific distros, but my understanding is that those are generally overkill unless you’re making a gaming box