Well, I count at least 6 new ribs and lot of replaced planking....Check for cracks and/or breaks in the remaining ones....that will entail replacement at some point..Removing the canvas now would be a good way to check and see if any nails need re-clinching or if sections need replacement...also, taking off the outwales allows yhou to inspect the rib tips to ensure that none of those need replacing..Stem tips are one of the first things to go, so with the outwales off and the canvas off you will have a better idea of what you need to do...THEN...sit down and read the book!....Experience becomes the best teacher... good luck and keep us posted....