My Ideal beach cat would firstly be one that I don't have to pay for. Then make me an all carbon Tornado.
Forget the 8.5 beam... Give me heaps of beam and a beach to store it on with the mast up. May be an old aircraft hanger on the beach so the boat can stay out of the weather with its sails up and not get blown over.
Come to think of it, give me a C Class and somewhere to store it.
Is this too unrealistic