Christine (62kg), tested a Futura 93+ North Warp 7.0m2 + Deboichet SL2 34 cm fin: very good combo indeed :
http://www.star-board.com/forum/showthread.php?t=5455
Smallest sail tested on Futura 93 and still a manageable combo for her light weight: 5.8 m2.
For higher wind, she uses a Kode 80 with 3.7 - 4.7 m2 sail quiver range:
http://www.star-board.com/forum/showthread.php?t=5746
Cheers !
JM