150 weight sounds a bit light for your temperatures, however if you have a full windbreaker and keep active it may be fine. I would guess 200 - 250 weight would possibly be a good weight for you. Quarter zip with a collar is a great combination, as unzipped with the neck rolled back lets a lot of air in, and zipped up with the collar up goes pretty far up the neck. I have experience with wool products from Ibex, Icebreaker, Patagonia, and Smartwool - all work well. The thinner weights do seem to wear out more quickly.
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