Yes, we are deliberately taking two days to reach Dusy Basin, just to accommodate anyone in our group that is not in top shape, and even more so to let people acclimatize one more night before going over Bishop Pass. So they'll only be hiking 4 miles/day on the first two days. We'll also be camping on Tioga Pass the night prior to the trip, so they'll actually have two nights at 10-11k before going over Bishop Pass.
The third day is a layover, and I'm guessing we'll get the whole range, from people wanting to stay and laze around camp, or just walk around the lakes, to the more gung-ho who would sell their soul to see Palisade Basin. I like that Knapsack Pass, though a little brushy, does not have any spots that would trigger the fear-of-heights reaction.
Glad to hear Ledge Lake is a good camping prospect. I have camped at Bishop Lake which was overused, and some of the others (esp. Long Lake) just look sad. One of our goals will be to teach people LNT principals, so it's important that we find spots that are legal and that don't intrude on any meadow or waterway.