sounds like you are well prepared... just be sure that on Thurs and Fri you drink lots and lots of water to be well hydrated...

also, double check what's in your seat bag... tire levers, extra tube, CO2 if you use it, and ID! be sure you have id on your person somewhere as well in case you get separated from who you're riding with and/or get off course...

have a great time!!! Can't wait to hear your report... I'm riding a century on Sat too... and will check in and post pics as well!