bikemig is right on with the cable option, doesn't need to be heavy duty at all, no one would mess with it unless you have very expensive wheels. keeping the hybrid as a fair weather ride is a good idea, framesaver is needed now if you will be riding outside in the rain regularly, otherwise you could probably wait till the spring or a year afterwards. Framesaver is only for inside rust, for surface rust keep the frame clean and touch up the deep scratches which penetrate the paint