Dude...er, girl, seriously, noooo caffeine. Trust me, you don't want that in your system if you're going to make the leap from 900ft to 5000ft overnight. I stay off caffeine, booze, asprin, basically all blood thinners and diuretics. Theres an herbal kijigger called Cordyceps you can get at ...ermm...herbal drug places. I know there's one next to Potbelly on polaris that has it. Pop one a day, alot of climbers swear by it.
Drink water or Gatorade, avoid caffeine like the plague. I know a thing or two on the subject.
As for flying, I like turbulence because it lets you know that yes, air is still moving around the plane, which is a good thing. It also seems pointless to be in/on vehicle that does feel like it's moving.