I hadn't considered an elf for the role, although it's something to consider. The ability scores wouldn't change overall... move the 2 points from int to con and the net effect is zip.
On the other hand, I'm wary of making significant changes to the character as he is at this late date and there is the wisdom bonus to the dual minded alternate trait, which allowed me to keep Wisdom at a 10 and focus more on what makes a Swashbuckler fun to play. His Fort is going to suck for the next several turns as it is.
The Fey option for the half-elf is an option though. His perception sucks anyway, so it wouldn't loose much and the long strider option would let him tumble at 20' a round instead of 15... My intention had been to eventually contract someone to enchant boots with Longstrider, but that's still an option... would they stack? A 25' tumble?
Going off to look at the alternate cracial options.