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Go with the Oakley Modular System. It's a great layering quide.
For the first layer go with the SethMo baselayer shirt. It's Polartec merino wool, really nice. Then for the second layer get any fleece. I really like the Seth product story so I would go with the SethMo Polartec Steetch Fleece. But a cheeper fleece option is the Oakley Chestie Fleece.
If you're going to be in weather that cold get the SethMo Down Jacket. It is a low profile down puffy and its packable too. It's a little spendy but cheeper than Patagonia. It will really keep you warm. And the puffy looks cool just to wear by itself.
Just my 2 cents.