This isn't a twitch game. You're really going to be handicapping yourself if you don't learn to love the keyboard.
That being said, a good friend of mine uses a "throttle" controller with a dozen or so programmable buttons. He programs in movement and all the basic functions he needs, and does everything else with the keyboard.
i do admit that i find myself with wristpains occasionally playing the gme in my left wrist.. because everyone has the same problems EQ1 bards had.. we are constantly pressing those number keys in combat.
invest in a wireless keyboard and gyration mouse...that way you can go anywhere you want, lean, rest, lay in comfort as you play, and the mouse doesnt even need a surface to work, i just got both of these and i play in total comfort it totally rocks