RE: board choice
The Carve 90 (like the other small Carves) jibes beautifully (almost jibes by itself in moderate conditions) but so do the Kombats.
The Carve will be a bit faster (although the new '06 Kombat 96 and the '07 Kombat 97 are pretty fast).
The Kombats have a bit more "pop" (when you get the mast foot trimmed correctly) than the Carve, so for jumping the Kombats would be a little better.
Hope this helps,