Two boards are always handy.
But the new quad convertibles are also very nice. New 77 or 74 not an option??
If you were to go for the 2010 quad option, I'd go the 76 at your weight.
BUt might get a handful in the stronger winds
But if you really liked the evo's??? Maybe the two board option at reasonable prices in the go.
Sorry I can't be too much more help there