Hey, I just got some of those Hodgeman Guide pants for Christmas, too! I like 'em.
I agree 100% with Rooster. Get those Bama Booties. I used them for years in the driftboat, where my feet always froze. I NEVER had cold feet after using them.
Now my husband has discovered them, and he won't go fishing without them. I have comfy warm feet now in just wool socks without the booties. In Port Angeles, they are sold at Swain's General Store for about $12. They'll last several years.

For really good, warm, ( albeit expensive ) clothing, try a mountaineering store. Those guys that climb the Himalays do so in the warmest, lightest gear they can get. I have a pair of longies that are 200 weight microfleece overlaid with lycra so there is no bulk. I paid about $60 - $70 for them, but it's been 5 years and there is no sign of wear on them.
diana