One thing you might consider adding is an "Original Buff". If you haven't seen one, it's a lightweight, compact-folding tube of microfiber fabric you can wear as a neck gator, headband, beanie, pirate's cap, face mask or balaclava. They're available in sport goods stores (I got mine at REI).

I got one last summer because they are great at wicking-away sweat (I sweat a lot). Then I saw a few people snow boarding with them on and decided to try it out myself. Of course I happened to pick the coldest day of the year: 4*F, 20MPH winds, 12"+ powder snow on the ground with about 1-2" crust on top (though it eventually warmed-up to about 18*F).

I was off-roading with my Jeep club all day, spending about 1/2 the time outside the rig watching/waiting for others to attempt obstacles, helping friends get unstuck, changing a few tires and eating lunch. Wore the Buff as a balaclava and it was enough to keep my head, face and ears warm without the suffocating thickness of a fleece balaclava.

The only downside was I only had a red paisley design Buff with me, and everyone was making fun of my "babushka."