Reviews from the majority of folks who use the Woodsmans Pal are not great, seems to not be the best chopper and not terribly comfortable.
From looking at area maps and pictures of the wilderness there, I don't see an environment where you'd get the most use out of a machete: I think you'd pretty much be carrying dead weight.
What other blades are you carrying? If you're going to be gone for that long, I'd assume you're working hard on keeping your weight way, way down. In general, though, I'd recommend taking at least two items: a good pocket knife and a very good belt knife. A hatchet or a folding saw would be in my pack without a doubt, but others don't necessarily find that to be a 'must have'.
It would be hard to beat a Swiss Army Knife for a pocket knife, either the Vic Farmer or a Victorinox One Hand Trekker. Both these have useful, simple tools and carry easily. They also both have small saws and good blades. I favor the Farmer.
Many options would exist for a good belt knife. Some ideas to look into:
Fallkniven (F1 is quite popular)
Bark River Knife & Tool (Many, many options from them such as the Aurora, Nebula, Kephart, etc.)
RAT Cutlery (RC4 just came out, looks like a real winner)
Customs from folks like Scott Gossman
Most of those, save the customs, would run you around or a little over $100. If you're on a tighter budget, other options exist.
For hatchets, the Fiskars 14" hatchet is dead reliable and a great buy, highly functional and quite light for what it does.
If you've already got your steel choices lined out and were just considering the addition of the machete, my apologies! I really enjoy woods blades.
Either way, stop by the Wilderness and Survival forum to talk gear, we love that stuff over there. Lots more good advice and steel and all else to do with the outdoors.