It has been literally decades since I have raced, or paid attention to racing but I'll toss out a question. What about a Cal-29? Definitely bigger than the boat the OP has been sailing. Good design, decent cruiser, sails well, and the cost for sails and rigging would be much much less than some of the 30+ft J-boats that have been mentioned. It would also be a LOT cheaper than any of the other boats mentioned so far. Of course, it would also be a lot older.
I don't know what the rating is on the Cal-29 but I do know that back-in-the-day, a number of sailors in our club raced them successfully. They are also a pretty comfortable boat for a couple to cruise on.
Just my ignorant $.02 and change.