Originally Posted by adamrice

Lots of people have done this. Frame bags, seat bags (either old-school sideways Carradice bags or modern longways bags), handlebar rolls, etc. 20 lb is not a lot of extra weight to carry. A 52-cm frame obviously isn't very big, and even a half-frame bag will rob you of at least one bottle cage, so you'll need to sort out hydration.

Not clear if your bike has rack eyelets—if you're considering using a rack and panniers, make sure that heel strike won't be a problem. There are ways to work around lack of eyelets, but they can be inconvenient.