Replying to Invaders vs. Fujatives. duel

I was just wondering on what skis to get for next season i've never had a true park ski and want to have a soft skinny ski to mess around on in the park when there's no powder to be found.

Specs:
-Age:14 yrs old
-Height: 5'11
-Weight:150 lbs
-Skill level: beginner/intermediate park (3's over 30 ft jumps), basic rail/box grinds 270 out(nothing too fancy, Advanced all mountain riding, advanced powder riding.
-Location: Central Idaho (soft snow avg. 300-400 inches a year)

Skis:
-2008 Line invader 178cm
-2008 K2 fujative 179cm
-Mount center to 2 back (center on invaders obviously)