Replying to O7 Ak Enemy and the seth

Ok so i have two questions..... It seemed i had my mind all set on getting the Enemy. I ski park alot and am wanting to ski more big mtn powder kickers type thing. I weigh around 145-155 and am 5-10' tall. I am a agressive skier and think I can handle it, the 179 that is....so ive have been reading old threads and people are saying to mount them at +7 so they are all good to still have a good ol' rip throught the park which i would probably do to get back to the lift. Does mean from the recomended line? or what?

Numero dos: I have also been looking towards getting the Seth. I dont know what would be more suited towards me? probably 70% percent soft snow and 30% park.

thanks for the help.