Okay. We are planning to visit Yosemite in august and hike Mt Dana which is is at an elevation of 10,000ft. Also on the day before whitney hike, we are planning to do some acclimatizing hikes in Lone Pine area. I hope this helps.
My worry is a combination of how sunny it will be + the steepness. When these two are at a peak then i am very slow, I become the slowest person in our group. But as I see from many people's comments, may be starting to hike as early as possible could solve at least the weather part so that i gotta handle only the steepness.
