Nice info there, AC.
I'm in the S.F. Bay Area, where the highest peaks are only around 4000 feet. So what works for me is starting out with a few hikes in the area, then driving to the Sierras every other weekend to continue my "stepping stone" practice hikes. Yosemite has Half Dome and Clouds Rest (6000 vertical and 20 miles), while Kings Canyon has Kennedy and Granite Passes (both over 6000 and 23 miles RT), which replicate quite well the Whitney hike (although at a lower elevation of around 10-11k).
I believe it's only about 3 hours from So Cal to the Lone Pine area, which I think would be worth the drive to do a practice hike or two. One can't be too ready for Whitney!
As for diet, I normally do low/moderate carbs with no junk food ever, so for me foods with a lot of fat content (like beef and cheese sticks, nuts, etc) work really well for me for burning energy. But then my body is used to burning fat anyway. Besides, high fat foods are, calorie for calorie, lighter on the trail.
Last edited by bruce; 07/21/15 09:18 AM.