I'm another that had my bacon saved by having a scan copy of my passport on my email. Also a good idea to scan a copy of all your travel docs in one email and send it to family, that way they have all the information as well and in case you cant get to a computer they can help out. Also send them contact numbers for everything like consultes, your bank, your airlines, your travel insurer etc.

I was also going to suggest space bags, the ones that you can roll the air out of it. When I went through Vietnam we had boily hot days down south and freezing weather up north, so was great to be able to roll up the big winter stuff and not have them take up so much room when we didnt need them.

Dont forget about the stuff at home either, like mail holds (or redirections since you are going for so long - they can take a while to kick in so have them ready to go about a month before you leave), energy company etc

I also didnt take any more than the small bottles of bathroom stuff, just brought replacements when I ran out, saves carrying to much. Oh and spray on bandaid! BEST PRODUCT EVER for hiking.

GL - sounds like you are going to have a fantastic time.