First, read this book:
(You can read the other referenced books mainly for the enteretaining illustrations of old-school diehard tele skiers ready to ascend slowly and descend even more slowly.)
Second, I think this comes down to whether you have in mind tours that can accomplished with:
-- patterned bases ("fishscales"), often incorrectly called waxless skis (since they're an alternative not to glide wax, but only to kick wax, which is more efficient, yet tricky to apply correctly, especially in the Sierra with wide-ranging temps over the course of a day)
-- climbing skins
If the former, then either SNS-BC or NNN-BC bindings (pick your boots first, then get the bindings), and some ski like one of the Fischer S-Bounds series.
If the latter, build up a rando race or near-race setup. If you get a true rando race setup (with a Dynafit binding that has no fore/aft adjustment -- mount carefully!), you might even be lighter than the SNS/NNN-BC setup. And just like a nordic binding (and unlike any telemark setup), you have a resistance-free pivot *and* the binding stays put on the ski instead of pivoting with the boot on each stride. (But not as good for very long flat sections with lots of rolling terrain. (Though Dynafit rando race setups won this past season's Elk Mountains Grand Traverse *nordic* race.) However, you can compromise by using very narrow skins or kicker skins.
Or you can take on a wee bit more weight for way more fun performance on the downhills, so get a regular Dynafit TLT Speed/Classic binding, a near-race boot like the Dynafit TLT Evo or Lite, Scarpa F1 (as opposed to the F1 Race or various after-market modified F1 boots), or even the F3, or the Dynafit Zzero3. Then for skis something around 70mm or a bit wider in the waist and a normal lenght, vs mid 60s for race ski and ~160cm length.
The other complicating issue is that SNS/NNN-BC boots do not have removable liners, whereas any Dynafit compatible boots will come with some type of separate thermomoldable liner, with the advantages of:
-- can be removed for use inside tent in lieu of down booties
-- allows for custom fit
-- super warm
-- can be removed for drying overnight, although then again, they're so light, that even if they're wet in the morning, your feet will still be warm