Help! Building a PNW quiver

Resort - 70 to 80mm underfoot,   All mtn - 90mm,  Big mtn - up to 105mm.   Pow (only)  105 +.   $  Best deal - search the prior 2 seasons.   sidenote - Rocker in your 'quiver' is a Powder ski.  And quiver, & rocker - is synonymous with surfing.     small waves - longboard,   medium waves - performance short board,    waves double overhead - CA gun,   large to huge waves,   Hawaiian gun, or 'tow-in board', and very large cajones !!
  ** if you get a rocker ski, you'll need a doctor's note for missing class.
                                                   RM,  ex-surfer, ski-bum -  Reno, NV

My son has megawatts and they are fun but IMO too heavy for all BC touring which is what you say you are interested in. By the time you add skins, the megawatts weigh a ton.
Also if you tour in megawatts, you have to break trail. That's a rule.

Since you have already dismissed DPS( The Wailer 105's are a great touring ski but as you say expensive) I would suggest you stick to all Dynafit and get the Manaslus.
Heard a lot of good reports about them and they are light.

I haven't skied the Coombas but I have friends who have and find them a bit planky but to each his own.

Tip rocker is not a fad IMO and works.
The new Atomic Atlas looks very intersting if you want to go rocker. I looked at a pair in EVO last week and they have the same hybrid shape as the Rossi S7's ( best ski I have used to date but too heavy for touring) and they seemed much lighter and possible for touring

My  2 cents.
Have fun

Why spend the dough on bindings that weigh 8oz if you are adding them to such fattys? Dont get me wrong the side country is perfect for what you are looking at. Why not make the most of that purchase with some lighter skis. You might appreciate being able to take your stiffer boards up to Rainier on a day when you know you will have to ski some ice in places where spilling is not an option. KARHU JAK. Not the BC version, thats nothing more than a wider Baker. KARHUS have been awesome in the pow and held their edge nicely on the volcanoes as well. Or really, the Dynastar Legends, the older stiff version will force you to make turns the right way and there is nothing else I would rather ski when the anticipated corn turns to East Coast boiler plate as the winds unexpectedly pick up.

Legend Pros are every bit as heavy as Megawatts.

Have you considered the new Gotamas?

106 in the middle with rocker should float real nice, but also hold an edge.

I'm skiing the old (non-rockered) Gotamas for non-powder days and the Atomic Atlas for powder days this year. The Atlas is surprisingly light for such a big ski.

The Atlas is surprisingly light for such a big ski.

And I think it has a notch in the tail for skins which so many manufacturers seem to ignore.