Eddy- I'd be interested in seeing a picture of the (whole) top of the hull. I'm curious to find out if you have a Mk I hull or a Mk II hull. The MK Is are very hard to find, and the lack of a deck-lip makes them much more pleasant to trapeze from.

Also, my advice on going to West Marine was to make your own wires for less money than you can order them. If you have the lengths of the wires (eye-to-eye length), you can just make your own as close as possible, right in the store. It's not hard to do at all, and the employees would probably even show you how to do it.

You could even use "rope". I'm not sure that it would be cheaper or easier, but there is line out now that is strong and low-stretch enough to be used as standing rigging. Vectran or Technora or something like that.... but you'd have to learn to do eye-splices with it. A big plus is that its much lighter than the wires it would replace.