Get some capelline socks made by cant say name they arent sponsors
. also get their liners keeps your feet warm and dry all day pick up some of their silk weight long underwear too..
If you are a big guy hit a freeport maine outfitter and a nebraska one for fleece pants, shirts, and tops. Get a good goretex shell as the final layer and a warm hat. You will be warm and dry all day. dry is a key word here the drier you are the warmer you stay.