Butch, Those shoes look cool. It'd be rad to size them in person, though I bet you can always swap them in the mail.
Honestly, the best is to go to the running shoe store, (You're in a college town, they're has to be one) and let them see your feet and use their best judgement.
If you're willing to throw $100 bucks, you can check out the running shoe store.
Maybe you don't want a running shoe, You might need a firmer platform for walking and support, I don't know.
5 miles a day is great, Circulation is the key to fitness. Steady consistent humming diesels...
Running shoes (trainers) wear out after about 600 miles. All that shock absorber technology wears out.
People get Shin splints, sore legs, sore ankles, sore knees and it moves up if they don't change their shoes.
The foot strike when running is about 3 times your weight...