What you are looking to do is to bring the platform up to the level of the 1980's Hobie 18 Formula 104 by Hobie Cat Europe (pre-tiger). It had high aspect carbon daggerboards and a higher aspect 3 sail rig. Some specs on the SCHRS list. Maybe HC europe can help you out with boards and wells? - if marketing issues don't get in the way.

http://www.youtube.com/watch?v=sR8QSlcpre0

Cheshirecatman