"This PC is basically my life" screams leave well enough alone. I wouldn't even set up a dual boot on a machine I depended on to make my living. If you do, make sure you've got everything backed up before you start. Nothing should go wrong, but that's a very different statement than nothing will go wrong.

If you want to start using linux I'd recommend you buy a cheap second computer and start there. You can safely experiment as much as you like without risking your professional set up.