Thanks for the helpful comments.

Glenn, I like the 6 day plan. I was thinking maybe 4, but why not make it a longer trip.

I was also thinking to try and do it as a hike right after Philmont, then I would only allow Scouts who went to Philmont who are 14 and above.

I'm going to try and make it out to Mt. Whitney maybe next year to scout it out and get a good feel for it prior though. I don't like the idea of going on such a challenging hike without first knowing what to expect.