I'm 5' 11", 182lbs. Currently riding a '06 (or '07, can't remember) TRS board w\Magnatraction but no Banana, 162cm. I want to get a new board. LibTech site recommends the TRS in 167 for 170lbs+. Is there any reason why? Why so long? I'm all mountain, all conditions rider, rarely in parks. 162 or 167 ??