Gabriel,
I tend to be more conservative/cautious and I actually recently went heavier and bought the Petzl Tikka XP2 after getting stuck at 10,000 ft at Trail Camp on the way to Mt. Whitney last year.
We had to relocate our shelters in a wind/rain storm in the middle of the night due to pitching our shelters in what turned out to be a run off ditch. (yeah, that smart).
The headlight that I had really did not have the brightness for us to easily repitch our shelters…thankfully, someone in our group had a powerful hand held flash light.
So for me, I would look for other areas to cut weight….I now consider having a bright head lamp as a key safety feature…especially if I needed to hike out of a situation at night.
That said, "Hike your own hike."
If you go the micro LED route, I agree with others that having two of them would be a good idea.
I know someone who has even put tabs of velcro on his visor so that he could stick two of them on his visor for hiking at night.
Plus, having two means that if you needed to do a battery swap at night, you could do it…having the other one to give you light to work on the other one.
That said, get one that is bright as possible…don't think anyone is going to complain about having too much light. :)
-Tony