Sounds like a good trip....When hiking someplace for the first time, I carry the least amount of photography gear as possible. Sometimes only one lens, but usually two. I would recommend no more than the 100-400L and the 17-50. Macro is always tempting....but it is hit and miss, so I typically don't bother.


My typical non-photography gear includes a map of the area, a compass (even if you are on trails, now and again, it is just nice to know which way is North), a flashlight/headlamp, a knife or multipurpose tool, first aid kit, extra pair of good socks (always the first to get wet, recommend wool if you have them), waterproof matches , a cell phone (it is goofy how many places have coverage), and cloths that can be layered. I echo the comments on bug spray, but once it has "dried" it isn't a problem. So, take all plastic things off, spray on, let dry, and you should be fine. I think sunscreen was mentioned. Snack foods, water are a must....I find that gatoraide or vitamin waters really do help if you are doing anything strenuous.


Have a great hike.


EDIT: Not only do we have disappearing photos, but text too. I had edited this post and the edit is gone.


Anyway, I was thinking about this more and just wanted to mention that I often have 2-3x moregear in mycarthanI plan to carry. For example, I havemultiplejackets and rain gearin thecar that I may or may not pack with me. Sometimes a change of cloths. The other thing I wanted to mention, but for blisters, try moleskin. You'll need scissors/knife to cut it to shape, but if you have a hot spot/blister forming, slapping some mole skin over it should really help.