I'd have to disagree with Alex - I tried to learn how to ski in the backcountry for a few seasons, and I still sucked major ass until I started putting in some lift-served days.  In my experience, you just can't hit your groove when you're only getting a few runs, an hour apart.  For the past few years, I've been paying by the ride whenever I go to the resort (which isn't very often) - much cheaper that way, since I only get 4 or 5 runs anyway.  I don't know how many resorts offer passes for X number of rides, but look into it.  Also, multiple sets of skins??  I've never known anyone who needed more than one, even on 10-day hut trips.  Maybe if you're snow camping, but those shits are expen$ive.  Pull 'em apart, hang 'em, dry 'em.  And keep 'em out of puddles.