Why you're skinning on 140 wide skis I have no idea and skins that wide will also be probably 2+lbs each side.
Opinions aside, I am pretty sure BD makes 140mm wide skins. If not I'm pretty sure you'll be just fine using uncut 130mm wide ones, as that's a lot of contact area.
I do not envy your climbs though, ugh... That's going to be HEAVY.
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