I'll be trekking to Everest base camp in December (~3rd to ~22nd) and I'm currently sorting out clothing appropriate for the cold nights.
I've been looking at down jackets – earlier I ordered the Montbell Alpine light parka, however have since done a lot of reading and realized this might not have been the best choice (since its a sewn-through design, I will probably need something heavier/warmer at this time of year). I'm now looking at warmer options – Eddie Bauer Peak XV or Mammut Ambler were two I saw recommended on these forums. However, I'm now worried that these could be *too* warm. Apparently it gets down to around 0 degrees F at night at the higher altitudes (~ -20 degrees C). I live in Australia and have never owned a down jacket before in my life… Would these be an appropriate choice? If not, what else should I be looking at?
I will only be using it for resting at night in the lodges – so waterproofing isn't necessary. My only other preference is that it has a hood, and not too expensive (around $200 – $300 would be nice).

