Actually a good report, don't think too many other people will read it without a few line breaks.
Headache - could be dehydration. Carrying 60lbs, you're going to sweat even in the winter.
Yes, I realized this after it was posted :) However, I'm still figuring this site out. When I get some time I'll sit and go through it and learn how it works. Tried posting pictures as well, but had trouble. Thank you for commenting! I don't think I was really dehydrated. I'm a bit of a camel and drink about 100 oz./day normally. My idea was that it stemmed from little sleep followed by exertion.
Three liters in 24 hours? You should be drinking more than that while doing a great range traverse! Baseline is two liters, add a liter for every hour of exercise.