Emily-

I 100% agree with you on heavy loads (or at least it has to be better than what I've done). 40 lbs of cat supplies on a rear rack does NOT make a fun ride home (my Trek 520, but still.....) I should use the trailer more. Or look at actually getting a front rack.

Sounds like the OP's needs are a bit more modest

You may be right on the racks - I think the rear is standard except for the front supports - those are longer than what one would have one a 700c bike....

FYI I'm getting another Friday! A well used PR came into my LBS. Not what I would necessarily choose for a commuter, but the price is right for me to actually lock it, and the bars/etc needed replacing anyway - so she shall be mine