Replying to (detailed) Best Pow SKi for Me?

I am 5'4 109 pounds. I want a Powder Ski with 115 mm at most underfoot. I am afraid if i go bigger it will "wish-washy" carving on groomers, because i am lighter.I ski at Mt.Bachelor Oregon we have a fair amount of pow days during the season, that i wish i didn't have only my invaders. I wont be buying them till later this season (when stuff goes on sale)  but i am wanting to know what i should be keeping an eye on. I think i want something with rocker i definitely want a twin. I basically want a ski that i can take a fresh pow run (forward or switch hahaha) then rip down the groomers to hit a couple jumps. But i want these skis to last so they will never touch a rail. and i really want a rocker and early rise for increased flotation.
Thank you i need the most advise possible. so if some one already suggested the skis that you would. just post that ski up again so i am certain.

Here are some skis i have seen:

K2 Obsethed
Armada JJ's
Line Elizabeth's (what are they underfoot?) 
Salomon Czars (same question)
Atomic Blogs (again)
Volkl Gotmas
Moment Night Trains (dimensions underfoot?)

Brands?

ON3P Pow ski?
Ninthward Pow ski?
Surface Pow ski?
Fischer Pow ski?