Wouter,
Don't forget the taller rig as well. I am not positive but beleive it carries 38' of stick to go with that main, and a 12' beam, and a spin?(64.1) I didn't see the boat but I think that is the set up. I apologize in advance if I am wrong.
ARC 21, 33' mast, 8'6" beam and spin plus 1' additional waterline comes in at 61.5. Hmmmm.