Someone asked earlier about Carbon Frame longevity. Here is the thread, and the Velonews article that was quoted is also good:

http://forum.slowtwitch.com/...20longevity;#4650254

Though you are asking about wheels. The carbon fibre itself does not breakdown on its own. You should try writing to HED and asking them, since they will know specific measurements, rim width, etc.

10 cog-set speed fits a 9-speed hub.

Are you missing a few zeros there?

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Assuming they weren't crashed or run through a huge pothole they should just be broken in. I still ride my old specialized trispokes from the early 1990s.

Thanks for that
No. No zeros missing. They were used for a couple of olympics

I'm about your weight, ride an early 90's spesh Trispoke (tubular). It's built like a tank and as others have said, unless you crash or damage it carbon it will be structurally sound for many, many years.

thanks!