Replying to To Everyone Who Owns Live Life 2s/One Lifes

I am 6"1', 170 pounds, and I was wondering what size to get. I am very poor, so I want to use these skis as long as I possibly can. At maximum, I will probably get to 6"2', 180-190 pounds. This will be primarily my powder ski, but skiing park and hard pack in the afternoon is also important. So Newschoolers, I have some questions:

1. What size is right for me? 189 seems like the obvious choice, because of my height and the fact that the rocker takes away from the "length" of the ski. However, 179 seems great for the park and I have a potential opportunity to get 179s on the cheap cheap. Would 179 be too short for me?

2. Dumb Question I know, but the Live Life 2's are physically the same ski as the One life correct?

+K for good help (for what its worth)

thanks