Be prepared (I could write a book on the subject)
First, the catalog you need is from Catalinadirect.com.You will need to replace the standing rig if it is more than 8-10 years old (I would replace it anyway). Forget about what you can see, it's what you can't see that is important. $320 will buy the kit from Catalinadirect. Add a new backstay for $70.Might as well replace the running rigging while you're at it. If it has been exposed to the elements over the last 18 month like the boat, it is probably ready to fail as well. Add another $200 +/-.What about the sails? Have they been stored properly over the period of time the boat has been dry sailing? You should really inspect the sails closely. How old are they? If you need new sails, you may luck up and find some used ($500 for a decent set). If you buy new, an off brand will put you back $1000 for a main and a 135%. A set of Norths will be around $2000.The part that almost made me give up: Electrical system (some of the earlier boats were not wired to my understanding)... Pull the panel out and look at the circuits. Are they corroded? Probably if it is the original panel. Reletively inexpensive at $35 to replace, but you will have to make the cut-out a little larger. Running and masthead lights. Do they work? You may want to replace them anyway. $75 +/- depending on the brand. Wiring...this could be trouble...mine was. If wired, strip an end that can be reconnected to check for corrosion (does it fall apart if you twist the ends?). If it is corroded, it needs to be replaced. A 14 gauge marine grade duplex wire is a couple of dollars or more per foot. You will need about 50-75 feet. Add a new battery to the list.Not sure about the keel cable, I have a fixed keel. You more than likely will need to replace other parts of the swing mechanism if the cable is gone.How are the wenches? Do the blocks need replacing? Check the mast and spreaders. Also check the masthead sheaves, they are probably cracked (not expensive).How is the bottom? Blisters? Need new paint? This can easily get to be $500+.My only other advice is to consider whether or not you are willing to devote the time needed to undertake a restoration and will it cost more to restore the boat than to find one in good condition.