I think the trick would be to essentially treat it as an F18HP- in fact that mast and sail combo would be even more tempting to me-- just rig it with main and spi. Could maybe find an 18sqm sail to use? Not sure of length of f18 mast though- now to really "Franken" it add wings and the above F18HP so you can match the righting moment--


Kirt Simmons
Taipan, Flyer