Whoa... glad you're in as good of shape as you are man. Get that neck checked out asap and if it's anything that they think will cause you lasting pain, SUE.
I got rear ended by an SUV last week, but our bumpers hit squarely, so it was about 1/10th as bad as what that looks like.
2000 GTS? That's gonna be a total loss for sure. My car didn't look half that bad, and it had $6k of damage. That'll easily be past $10k, which would put it in the totaled range for sure. Next car? Depending on your price range, a 2004 GTS six speed would be sweet. If you want something different, RSX-s. Or you could do what I'm about to do, swap the Celi for a Mazdaspeed (turbo) Miata.