Whats that quote about the best time to start doing something is a decade ago, the second best time is now?
Anyways, it will be easier to switch if you have a working machine with Win10 instead of waiting for your machine to shit the bed while upgrading to 11
I did that not to long ago and it worked kinda OK, then it did old laptop things and stopped turning on. I've used Linux on a couple of old computers now, and for the most part it worked fine after a little fiddling with the setup.