It's been a few years, but I have done several 2 week hikes.

first up buddy up, 2 people share tent, food, water filter, stove.... So if you have a group of 6 that's 3 pairs.

Pack light, invest in that light weight stuff, you know plastic forks, light weight stove....

Get in shape, load up your backpack and start walking, then do a few weekend trips.

My buddy and I had done many weekend hikes before our first real trip, but others in the group had only done a couple of day hikes before setting off on a 2 week adventure,  Nedless to say blisters, broken ankle, lack of stamina where all problems....


Ok for the camera and lens, thinking of it this way, most likey your not going to do this again, so you are going to want to capture your memories.

But are you hiking thru the woods to sell photo's or are you doing it for a higher cause?

if you are just trying to save memories then I would go with the canon 5is or what ever version they have out at this time it's got a good zoom range and does wide ok, it takes regular aa batteries.

if your trying to make some money of your journey, then I would say 17-40l would be my choice, and a carbon tripod.
Looking at the wiki link it looks like wide is better.

have fun if you do decide to make the trip.
Bob

It would depend to me on how much walking each day.

If its a couple of hours then set up camp and look around,
 then I take 24-105L IS and 100-400L IS

If it is 8 hours of walking each day then I'd ditch the 100-400L IS and take 16mm or something extra wide.

It would also depend if on how much wildlife there was to shoot.