Welcome

Fit is the most important thing, as I'm sure you know That's a short time to get used to a new bike before a Tri, but if it's a good fit, you should be OK.

Assuming it fits, it seems like a decent deal. This may give you some more points of reference: http://www.terrybicycles.com/trade/i...ml?browse=sell
Here's another one that (was) for sale for $650. Do check over the bike to make sure the wear estimate is correct. http://www.sheldonbrown.com/chains.html - read the section on measuring chain wear, and go armed with your tape measure

The new Symmetry is $1330, but has slightly upgraded components (105).

Good luck!

CA