Your list is similar to mine, except I have the parka and pants added to it. I'm sure my parka is warmer than yours and my pants would be too-they were made by Go-Lite a few years ago, but were discontinued. I also have a fleece balaclava, a fleece watch cap (beanie), a couple of pairs of gloves. I plan to buy a pair of expedition mitts of some sort, maybe a BD or Marmot-REI sells several different ones.

However, these may be the ultimate cold weather mitt-
http://www.empirecanvasworks.com/thebigmitt.htm