I took my Hanford out for one of the last rides in the US before PBP, and even with a overly stocked front handlebar bag, the bike always performs flawlessly. I am now meticulously scrutinizing what will go in the handlebar bag and debating on a small rear saddle bag. I have been deciding on what tools to bring, how many inner tubes(i think I decided on 3), and I think I finally decided on arm and leg warmers, no tights.
I decided not to use a dropbag(a service offered to bring a bag to a certain checkpoint) because I feel it is a little against the spirit of self-sustained riding. This has left me with a dilemma, because I need to bring 2 spare pairs of shorts and a few pairs of socks. It might sound like a luxury, but nothing feels better than a fresh pair of shorts after riding in the same pair for 24-35 hours. I don't want to cram the clothing in the handlebar bag, and my only seat bag is way too big and I know if I had the space, I would probably start to fill it up. So I will look around work for something that might work.
I'm also thinking about posting the contents of my handlebar bag, so other randoneurs can compare. I know that I am probably bringing more tools than the average rider, but at the same time, I usually offer my services to help others if I can and the tools assist me with that.