That's a pretty extreme range for 1 set of clothing. I would check out these guys:
http://www.naturalgear.com/shoppingcart/

You could probably make something work with Bibs and their regular coat as long as you layered with some good under gear, like cabelas polar fleece extreme for real cold, and polypropelene for warmer temps. They make rain gear also.

I like the natural gear for the many different scenarios/terrains they can keep you concealed in.