I agree with the safe approach. Thinking back how steep Black Giant was on the "easy" route last time we went up without snow, that could get real nasty with snow and ice.

re lightweight options - thing is, I have already two sets of everything, and we are two who need the gear. Only one axe is light (Camp titanium mega fancy), the other is a big old Stubai with fiberglass shaft from the late 80s. Crampons are a pair of Petzl step-ins tested on the mountaineer's route in winter, and a pair of Chouinards from the 80s that was never used, heavy, but looks pretty capable. That is the first item I'd replace with new for max weight savings.

We may bring ice axes even if we don't do the big peaks, since there are places on the regular route that could benefit from having the axes available, even if it is just to hack a few steps into an icy shortcut up to Goodale Pass from Lake of the Lone Indian or similar obstacles. I need have a look at what is out there for light crampons.