I figure this is the best forum to talk about big shoes. The 120 pound climbers design all shoes so it's tough for us.
I did find a pair of Keen wides at REI. But that's not enough. I did my first ride, over an hour, in them today and my toes went to sleep.
I would really like SPD compatible shoes that has a little lug for when I have to walk up the hill and have Velcro closures. My favorite running show is a 13 Quad E. I could probably wear 14's.