Have a look at the technical thread, there are quite a few tips there. I had a bit of a rough trip of 650 kms of offroad work over 2 days, and the 2 mounting bolts of my carrier that sits on the front of the carrier, and runs through the mud guard snapped off. The broken bits were impossible to remove, and I had to drill an 8mm hole through them, and replaced them with high tensile allen cap bolts and nylok nuts. Just remember whatever you change you need to use the tools on your bike, otherwise you end up with something you cannot fix on the road.
Just a note of caution, the long travel on the front fork, and the shorter travel on the back, tend to keep the front wheel on the ground, while the back jumps in the air when you hit a bump at speed. A bit tricky bike to jump.
I found the seat not too comfortable though. Maybe somebody has an idea for you with that.
Otherwise I found the bike very reliable, except for the regulator problem I had. Check the technical thread for that. I fully agrre with luuk on the crashbars for the handlebars as well. Also do not over tighten your levers onto the bars. That way when the fall comes, the levers will just shift, and not brake off.
Good luck with the trip, and send some pics.
If its stupid, but it works, it aint stupid.