Just a side note about tires and rolling resistance. I think a century on the quick will be fine, unless you have visions of riding with an average speed over 20 mph that would be tough on the quick for 100 miles.

Rolling resistance and tire width is an ongoing discussion but most centuries (especially charity type rides) are held on non-pristine roads and a narrow tire is going to be pretty uncomfortable. I wouldn't consider anything narrower than a 28.

Here is a good, rather technical, article from Schwalbe. and one from Jan Heine

Both worth the read! Have fun