I recommend the Gotama, sounds like the perfect ski for what you want to do. Here's what I've written previously about it:
Volkls rocker profile is incredibly subtle, even though it is full rocker a better description would be flat camber with how little rise there is. My favorite thing about this design is how well it handles bad conditions. A ski with camber will buck and bounce when you charge over choppy, ditch riddled, snow/ice, because that's how camber works, it's like a spring. That can be great if you are skiing perfectly smooth soft groomers as you can pop in and out of your turns. It's not so great however, in cruddy conditions. The stiff full rocker profile that Volkl loves so much is good because it just blasts through the crap, the nose doesn't dive into every icy track because there is no camber to force it downwards, it just planes right over these small ditches. Tilt the ski a tiny bit over and you get the full edge, due to no tip taper and how little the tip rise is.
At 108 underfoot it's wide enough to float, but not so wide as to be cumbersome on icy groomers.
The Cochise or Katana would be good choices too.