As a nonresident your guide should have a list for you. Think lightweight mountain hunting. Here are a few things to consider.
1. Good boots meindel, lowa, kenetrek ...etc
2. Treking poles were previously mentioned, try black diamond
3. Good lightweight raingear
4. Best optics you can afford
5. Large quality backpack, 6000+ cubic inches
6. 4 season tent if guide doesn't provide
7. Lightweight 20 degree sleeping bag & thermarest
8. Havalon knives and lightweight saw
9. Bug dope and headnet
10. Flat shooting rifle and rangefinder
11. Leather gloves
12. Water purification tablets
13. Satellite Phone, map & compass, gps
14. Positive attitude!!!!!!!!!