I am staying in Mammoth lakes (roughly 8K elevation:https://en.wikipedia.org/wiki/Mammoth_Lakes,_California). Same as my staging area for Dana hike a while ago as well. I will also walk around a bit on the day before the hike at whitney portal.

I'm fairly active (work out 30 min a day 5-6 days a week). My bag is about 18 pounds. The weather will be ~65 at the base to ~42 at the top. So not too cold (don't know if it helps or hurts).