I used to own a Nacra 5.0--it sounds like it would meet your needs well--rugged, easy to single hand or double hand and can carry more people, easy to get parts (still made as the 500), easy to right, no daggerboards or centerboards to worry about. You should be able to get an excellent 5.0 with trailer for 2K--save some budget for PFDs, trapeze harnesses, etc.

At 220 lbs, it would be great boat for you--enough but not too much.. (Not to say there aren't other great boats).