Scale it down to 14' and change to dagger-boards, toss 300 sq. ft. of sail on it and race in the F14 class
Just one question...why daggerboards? Ever tried to lift up two daggerboards when coming towards the beach on a nice beam reach? I'll keep the centerboard layout thank you very much.
If it's for home-building, a dagger-board case would be much easier to do. Also, if you're coming in to shore on a beam reach you should let the main out to take pressure off the boards and slow the boat before slamming into the beach.
Centerboards don't rotate all that well on a beam reach either. I've crewed on my friends P18-2 and we were double-trapped and flying through waves and hit a sandbar with the leeward board. It didn't rotate up at all, just lost a small chunck off the tip.