I would also recommend the H-17. With your weight of 230lb you are going to want to have some high wind for the H-17.

The wings really allow you to get your weight out to take a tremendous amount of wind. The wings also lessen your chances of getting knocked off the boat in a trough as well as keeping you above much of the spray, hence your vision is un-obstructed. I usually take spray to about my knees while the whole tramp is white-water.

The last thing you want in heavy air conditons is to be tripping over half raised centerboards and getting tangled up in a mess of lines. The centerboards on the H-17 are minimal, so if you forget to pull them downwind, you'll still be fine or set them halfway down and forget about them. The deck area is clean and you have only the mainsheet, downhaul and tiller to contend with.

Your biggest issue may be tacking, can be difficult in big chop, so don't wait until you run out of real-estate to attempt it. Get your speed up by falling off a little and then pick your moment and commit, trying not to stuff the bows into the crest of a wave. Roll tacking and being prepared to backwind the main/reverse the rudders works well. The only time you'll really stuff a wing is flying a hull too high, easily avoidable. Trapping off the back of the wing downwind is awesome, but with your weight, even sitting on the back of the wing downwind you should do fine. Also, righting the boat with your weight shouldn't be a problem.

I sail on a lake outside a college town so there are many windsurfers/kiteboarders out when it's blowing and I'm usually the only cat out playing with these guys. Hoo-Hah, have fun!