RE: evo 74 or 83
I'm same weight as you and have been sailing EVOs, 70,74, 80, 80, 83 since the 2004 models. I use them on the Arabian Gulf and the Great Lakes in nearly every kind of conditions if there is enough wind. For 4.2 to 4.7 I use the 74. It is plenty fast enough for B/J and I prefer the smoother ride than I get from the 80 or 83 which I consider my lightwind boards that I use with a 5.8 or bigger. As soon as there is enough wind for a 5.4 I switch to the 74.