Do not let the jib hype fool you. I am 5'9, 175 lbs and I rip up the whole mountain on my Horrorscope 156: park, groomers, deep powder and trees....it is so perfect in the Mary Jane trees.
For your weight I'd go with the 151, its reverse camber so you should be riding a size smaller (I used to ride 158s and 161s). I am actually thinking of picking up 2010 in 151 wide for really no reason at all...but I reiterate this board has all mountain potential. I've ridden it at Northstar, Squaw Valley, A-Basin, Winter Park (65 days), Vail, Breck and some crappy east coast mole hills when I was visiting the family and it excelled in every and all conditions. No bs I've dropped in bowls with 2 feet of powder, slashed it then gone straight to the park via my favorite mini tree run at WP and stomped some nice booters. It can do whatever you want it to do. Buy it now.
PS It's still as fast as you want to take it- I have never been sketched out even at mach speeds, the extruded base can slow down if you don't take care of it but just iron in some Swix F4 every few days, buff it and structure it with a nylon brush and you will be one of the fastest guys on the hill.
Its no question the best board Capita makes, probably only second to the this years Ultrafear but to be honest if that rides similar to the Stairmaster Extreme I think I will take the "noodle" feel of the Horrorscope any day- you get used to it and you learn to push it comfortably. Nuggets.