Re: rod rigging replacement
We replaced our rod...with rod to the tune of 7400 five years ago so 8000 sounds aboiut right. We could have gone with wire, but the savings was that much if I remember. Its usually the fitting which fail anyway. I was told by the C&C designers that the rod led to the stiffness of the boat vs wire, Some Sabres are also rod rigged too.
You can replace with wire. Not sure I would do dyneema.