fish, twin or quad

hi im looking around for a fish that will fly in small clean waves and be loose dont really know what to get (twin or quad). my normal shortboard is 6"4, i am 6"2 myself and 200lb so i dont really know what size to get, was looking at dims around 6"2 x 20 1/2 x 2 1/2 but not really sure if that would be suitable any advice would be helpful cheers.