I'd recommend breaking away from your comfort zone if you are dead set on moving over to PC and practicing using keyboard+mouse. The Logitech G600 is a decent mouse to use to get started. One way that worked for me personally is to bind your entire rotation for any job only to your 1-12 side buttons on your mouse and learn how to do your entire rotation by memory with just those buttons. Once you have that memorized it becomes much easier navigating towards using Shift/Alt/Ctrl Modifiers on your keyboard.

This will take time getting used to, took me about 2 weeks going from console games to K/M but once you get it down, you'll see that it was worth it. It looks more daunting than it really is. Plus, It will benefit you more if you play other MMO's or other online games on your PC.