Long story short. Due to the high value of our HCHII's resale, I'm looking to trade in my '06 Mag Pearl HCHII with 20k miles for a '07 Mag Pearl with Nav, and Leather seats. Dealer is offering me my car plus $6700.00 for trading up to an '07. My accountant believes I can also get the Fed/State monies - again since it's another car. So my actual out of pocket is $3100.00 and I get a new car plus upgrade to Nav and Leather. Is this a good deal? Thank you for everyones input.

'07 HCH w/Nav, '04 Corvette Z16, '98 Corvette Pace Car, '04 Chevy Avalanche.
HCHII Mods: Tinted windows, PIAA 4150K Headlights, PIAA 004X Fog Lights,T/P F/R 48/46 nitrogen.