It's a smart decision. Besides the $6500, I'd be less confident about the integrity/safety of a repaired SVX -however expertly it would be done, and you've learned, and taught the rest of us, the value of the original well-engineered, integrated body. The other reality, is that the accident would place a ceiling on the market value of your investment -not that such a rational calculation drives many of us SVX drivers and owners.
BTW, this is at least the second forum report of surviving a bad SVX accident in the past month or two, although I believe a passenger may have been hurt in the prior one. (Hope she's doing better)
Congratulations on surviving your accident and the best safe-driving to you going forward.