A few things:
1) Experience will help your views evolve. So don't stress too much. You could remount a pair of your existing skis & see what you htink. Or try a new pair. Binding-wise, use something and see. The trade offs between weight and performance are interesting. And you will not really know how to tune things up until you play. Even with light construction, really fat skis are heavy. Full alpine performance in a binding adds...you guessed it... For me, it is all about the down. But first you have to get up. I found out the hard way that "up" is hard with Kuros + Dukes on your feet :) Especially as I am a schlub on the uphill.
2) There are lots of good ski choices. If I'm skiing really nice soft snow or corn and do not have to compromise, I prefer to be on a Praxis Powder Board. IMO these skis totally rule the powder/slush/corn realm. A 138 does not make me cry either. The problem is these are not light (not totally crazy heavy, but not light). Nor will they side-hill especially well if it is steep or crappy or breakable... So then you start making trade offs. Or not.
If you want to trade off for weight and range of conditions, your 112s would be a great ski for a first shot at this IMO. Another choice - the Praxis BC is a very, very nice ski - very light, tough as nails, skis a very wide range of conditions well. They are narrow enough to side hill, etc well. But shaped in a way that skis soft snow well. Keith is selling them for a song right now (coupon gets you 10% off sale prices). Everyone has their preferences - I'd pick something appropriate out of the Praxis lineup. Next I'd probably look at the DPS lineup. And I'd consider the 4FRNT Hoji a super strong contender (skied a few laps on 'em in variable/mixed conditions & was super impressed). But it is all about what you are optimizing for and what you value in design and construction.
3) Bindings. That same damn problem. You can get light. Or you can get full performance. A Tour 12 is clearly not the binding a Duke is or a Tracker will be. But it'll leave you with more energy at the top - and likely get you there faster (unless you are a total animal). The interesting thing here is that there is no point in shaving 6 oz off a pair of skis and then throwing an extra two pounds of binding on 'em. So there is something of a balancing act with the blending of bindings and skis. A Baron can be a very reasonable compromise. Too bad they are not doing the wide platform version of that for this coming year.
4) Boots. I don't skin all that much - so I use my usual boots (Salomon SPKs). As is usual with boots, fit is it. There seem to be many good choices these days. If you like your basic boots & do not plan to replace them, maybe skin in them for a bit to see what your priorities are.
5) Skins. Any f the top rated ones will do you. One thing to think about: they take up room and are not weightless. So that ties to your ski choice (and ski type choice). I've been looking at Geckos. Seen some negative comments about the tail and tip clips. There is a good review video somewhere. Bottom line seems that they might be a good, low hassle, choice for skinning for turns vs big tours. Whatever kind you get - use a G3 trimmer (available for a few bucks).
6) Sidenote: tech bindings. Lots of folks swear by 'em. But now you are running multiple systems. Hold up a pair of DPS pures or Praxis BCs or any lightweight AT ski mounted with 'em and the appeal is obvious. Too big a step for me at the moment though. Others can probably add more value here.
I suspect some searching here, TGR, TAY, etc, etc will reveal lots of good discussion on exactly this topic.
Edited by spindrift - 4/28/12 at 9:17am
As usual, worth what you paid for it, Maybe more than usual, as I know just enough to be "dangerous".