Looks like you're in the UK (go into your user CP and change your country location so the right flag pops up) so your selection will be quite different than stateside.
Are you agile? If I've got it right at 15.5 stone you're a bit over 200 lbs.. you could have a blast on a laser on a windy day.. but maybe more than you're after, esp if you don't want to go swimming a time or two.
But from the Brit sailing mags I've seen there should be plenty to choose from.. hopefully someone local to you will pop in..
Again, fix your flag!