spend the money. if you are talking about Adirondack tours the weight matters.
I picked up a Kastel touring ski a couple seasons ago. 107 under foot. I went w/ the 167 length. I'm like, well close to 5'10" The shorter length comes in very handy when maneuvering through the Adirondack krumholz and heinous drainages.
I like the ski so much I went back to Mountaineer and grabbed the last pair of that year model. When Im done w/ this pair I'll replace with the ones sitting in the closet.
If you are serious about touring in the High Peaks don't cheap out on equipment. Also consider a shorter length given the terrain that is out there.
I ride with Crazy Horse!