All great advice so far.
Sarah - Olive oil figures prominently in my dinner menu. The calories are just a bonus to giving some flavor to the MH meals. I'm not too worried about the digestive tract effects I've read a bit about inre olive oil as I use a fair bit in my everyday cooking (vinagrettes, pesto, grilled sandwiches etc)
Tom - I'm not at this point very scientifically minded regarding my food consumption, and some of your posts in the pasts have been a great help. Perpetuem figured prominently in my original meal plan, to the tune of ~half my daily calorie intake, ~14 scoops of the stuff/day. I would have been eating solid food at breakfast and dinner and drinking my calories throughout the day. I did this last year on my Tahoe Rim Trail (failed) attempt. I wanted to bring Perpetuem this trip, but still haven't figured out a convenient way to deal with it. While the constant calorie intake helped a great deal in my performance, there were some drawbacks. One, that the powder was messy. The individual packs were too expensive, so I bough the 64 serving container and repackaged it. It seems to turn to concrete when it gets wet, which is a problem if it rains, and it did. And when resealing an opsack, squeezing the air out sent particles of powder all over, kind of defeating the purpose of an odor-proof sack. A Third issue was dealing with purifying water. Since as I understand it, Aqua Mira is less effective in murky water, I'd have to wait 20 minutes to mix up my perpetuem, which would neutralize the advantage of not having to stop to snack. Or, as I did last year, I'd have to carry a twice as much water, so I'd always have enough on hand to mix. Maybe though I'll replace some breakfast and lunch calories with 2 scoops, fit in a ziplock bag portions of Perpetuem.