I'm 90 lbs, 5 foot 1, looking for sandwich/sidewall construction, 75% park/pipe, 20% big mountain, 5% urbin'. ive been looking @ this years 4frnt STL, but i'm open to other suggestions. my skis from last year reach to under my lower lip now (dynastar troubled youth 138).... do i even need new skis? or can i pull off another year w/ my old ones? +karma for honest and legit answers...