You guys are good! I'm impressed. Here's my two cents.
You need a spare tube, glueless patches (for this trip they weigh less and are less messy), a good frame or mini pump (in a pinch they have infinitely more uses--replace a broken handle bar, ward off unfriendly dogs) and in the unlikely event of multiple flats, the pump can be reused, a multi-tool, chain tool, and tire levers(if you are riding with someone else you need one set between you--to save weight), bring a picture ID,and insurance card.
The tube should be opened up and tested prior to your ride. Then put in in a zip lock bag with talc. Carry all that you can in an underseat bag--it's less weight that your body has to carry and less chance of it chaffing. You might also want to go to
Ultra Marathon Cycling Association, Inc. and read about brevets, there might be a couple of things we've forgotten. Good Luck
