All good answers, thanks alot for the info! We are planning for July but want to have 3 or 4 back up options to make it a good trip either way. I have already done Whitney quite a few times but want to get my son up. I like the Langley idea as a back up. Either way I am sure it will be a fun trip. Will be driving up from Phoenix and plan on going through Death Valley on the way, should be a great trip.