RE: evo xtv 70 2007
I'm the same weight as you are. I spent the past two days sailing my 70-07 with 4.5, 5.0 and 5.3. I should have changed to a larger fin when I was using the 5.3, but I had such consistent wind that the 22 worked fine for me. I didn't find the 70 much slower, if any, to plane than the 75.