At 190 you are already limited on the boats that you could sail competitively. I am 190 and sail Formula 18s. The other choice you have is a Formula 20. The 18s are a way larger participation world wide. If you are in Florida or the Great Lakes then the Formula 20 (Inter 20) may be a fine boat. You do need to know who your competitors are and sail the boat that they are on or you may not see any racing.

Later,
Dan