Thanks for all the reply's guys. I did my MSF on a GN125 and loved it. Some more info, I'm 5'5 and 150lbs, my 'mountain' is basically crossing the blue ridge parkway from lexington va across to lynchburg va on the va501 via Big Island.
I do know the way I go there are no run offs or signs telling trucks of steep grade. google maps shows the big climb winds from 200' to 1200', just not straight up but a nice long windy road.
My problem is that there is very little between the 250's and going up to the 650's with little beyond the vulcan500 in between.

then I have that leg length challenge to beat too