Galvin, I'm a pilot in British Columbia. I think you would be wise to dispense with the tent unless you plan on going down in a camp ground. If you go down in the mountains, I can almost guarantee you will not find a suitable spot to pitch a tent. You'd be better with one or two Siltarps by Integral Design. They are super light weight fabric tarps that you can make skelter with, no matter what type of terrain you are in. A Siltarp and 100 feet of paracord would be a about 8 pounds lighter lighter and a lot more practical.

I'd also carry and axe or hatchet, a couple of good knives, multiple firemaking devices and tons of warm clothing. In the Rockies, even as low as 8,000 feet, the nights can be well below freezing during the summer.

Build your mountain survival kit around survival for at least a week. If you go down in the Rockies in bad weather it could be that long before any aircraft can fly. When it really socks in, even if SAR knows where you are, they won't be able to get to you.