I have no first hand experience with the largest Carve board, but if you are thinking of wavesailing in conditions where an Exocet Kona would work, I'm sure the Carve 171 with a more wave oriented
fin than the OEM 52 cm will do very nicely.
What size sails would you intend to use, and are they cambered or not.
Cambered sails tend to break battens, even in very small surf.
So you would need to find a big wave sail with softer battens as well.
Hope this helps,