Hi Brad. That's a nice, long ride! I hope you get well soon. I ride Raleigh, too. I prefer backpacks, like you do. I dislike the feeling of having anything heavy attached to my bike: I feel it upsets the steering and balance unless I am on a long straight-away. One other thing that is good about wearing a pack: It stops you from getting splashed on your back if you have no fenders! Have a blast and let us know how your rides are going!