We plan on driving up next Wednesday from San Diego and hope to be in Lone Pine sometime after 11:00AM. It sounds like the unused permits are released at 11:00. Is there a line that forms. By showing up after 11:00AM does that significantly reduce our chances?
If we are successful, we will pack up to Lone Pine Lake, spend the night. Day 2, stroll and fish our way up to Trail Camp. Day 3, hit the summit. Day 4, pack back down to the Portal.
apa,
Getting an overnight permit for the current day is very likely. My experience is limited, but when I showed up at 11:00AM there was only one person ahead of me and permits galore. It could not have been easier.
To get a better feel of availability check out Steve C's link to
Unused Whitney Permits. You can see where weekdays in August is a near certain bet. Also be aware that you can start as late as mid-afternoon and make Lone Pine Lake without any great effort.
Personally I think your itinerary makes a lot of sense. It is all daylight hiking, great for acclimatizing, and builds in extra time for whatever direction your enthusiasm dictates.
Good luck and let us know how the 10 year-old does.