Join Date: Jul 2010
Location: Victoria, Canada
Bikes: Cannondale t1, Koga-Miyata World Traveller
Don't feel bad about the expense. My son, a pro triathlete, is getting Zipp wheels for this season that cost more than your bike.
All you need now are a suitable lock, and a helmet.... bike shoes and matching pedals, Jersey, shorts, seat bag, CO2 inflator, spare tube, tire levers...
Have an excellent time preparing for your century. And enjoy the century as well. Maybe one day I'll be so bold as to try one.