If your boots are waterproof and large enough, you might be able to get away with some breathable waders. I use them for flyfishing and have hiked easily 4-5 miles easily. They are light, but at the same time, you can layer and they will help keep warmth in.
My thought would be for you to get some with a neoprene sock and then put your hunting boots over the sock. Assuming your boots are completely waterproof, your feet will stay dry and when you get to the stand, you will have the option of taking the waders off and just wear your clothes underneath or keep the waders on.
Here is what I have and am very happy with them:
http://www.orvis.com/store/product_c...0&pf%5Fid=96GG
Otherwise, I would probably stick with the breathable material. Since you're going to walk quite a bit, you won't get too cold except for your feet and as long as you layer, you should be ok once in the stand. If you don't like the prior approach, I would probably go with something like this:
http://www.cabelas.com/cabelas/en/te...614&id=0033341
Good luck,