Thanks for all the encouragement. I talked with DH and he was extremely excited that I want to do this.

I am thinking the Metric, because every long ride I do I need a little encouragement at about mile 70. I won't have my normal cheerleader! If this goes well I may be enjoying lots of rides without him.

DH is going to spend the next week giving me a flat changing classes.

SadieKate- I have all the things to change a flat but the skills! I seem to have difficulty getting the tire back on the rim.