Do you really need waterproof?
Check out Gray Wolf Woolens, you can find 'em on the web. I have some of their garments in the "wolfskin" material, insulated + a windproof barrier. Expensive, but superbly constructed, custom fit, and you will not get cold.
A bit cheaper, but still well-made stuff, are the garments by Day One Camo. Get the insulated, windproof bibs in Predator Fall Gray (great winter pattern), along with the matching parka, and you'll be good to go.
Gray Wolf will also do you a Scent-lok lined headcover in their wolfskin material, in any camo pattern they carry. They made me one in Fall Gray, and it is extremely well-made, better by far than any of the headcovers marketed by either Scent-lok or Scentblocker.
Ravenwear garments are as warm as any made. My biggest gripe about them is they are also very heavy - you'll have to pack them in, and then put them on when you reach your stand.