Replying to Pow Ski Help

Okay, so I'm trying to do some research on what type of powder ski to get and looking for help and opinions. I've never skied anything over 100mm waist wide so I'm not sure how fat I should go. I'm also 5' 11" like 145 pounds. I'm looking for a powder ski that:
-I can still ski the mountain on 2-3 days after a snowfall in Colorado or Utah (going to U of U, CSU, or Denver next year but have not yet decided)
-Twin tip that will ski well mounted 2-3cm back from center
-Not super heavy (I may do frame bindings because I'm hoping to get into some light touring next year)
-Will still perform in less than ideal conditions
-Is maybe a wide, quiver killerish ski that is especially good in pow

*It doesn't need to perform on groomers or super snow deprived conditions for I have another pair of skis for that*

Anyone with suggestions or experience with a ski that meets these requirements please share your opinions, thanks