My 2 cents is, don't wait to long before beginning the restore. Reason being is that if you wait too long, it will be hard to make replacement parts when the originals are turned to dust. For my restore, there was no stringer left only the fiberglass shell which didn't offer too much help. Also don't discount wood Cobalt was using wood in their boats till the mid 90's and Tige used wood until the early 2000's and you don't see many people doing stringer rebuilds on those. The only place I would say use composite is in the transom just due to all the penetrations.