I was in the same boat a few years ago.  I'm a tad taller and lighter.. same trouble.. wanted an all terrain ski that could handle crud and still scream down the steep but smooth trails.  tried dozens.  ended up with K2 Axis Pros but a little longer than what a shop would recommend for me.  (I used to ski 205s!!)  Whatever the newer models are, try a normal length on bumps and powder and then see if the longer version gives you the more stable fast groomers performance.  Worked for me!  plenty of floatation, snap, AND high speed stability.

My $.02