Thanks for replies guys. I missed checking back to this category.
As far a wool, layering, etc I have that covered.
Last year I would use wool socks and one or two pair of toe warmers and then tall neoprene socks over that (maybe 3mm or so). When it was in the 10s or 20s that is what I would use and in general I could do a 4-5hr outing with that combo of shore fishing wading. Not fond of the the rubber boot foots but that is what I used.
What I will probably do is see how far I can get with the breathable stocking foot waders, wool socks, toe warmers. I have Cabelas light wading boots (both felt and lugged) that are size 10. I will play around with how much layering I can do with size 10.
If things feel to cold that way I will just get heavy neoprene boot foot waders oversize for foor layering (or get size 11 wading boots that allow more layering). Really for very cold winter fishing the problem for me is hands but I survive that by bringing 2 or 3 pair of gloves and rotate them by putting them under the coat until they warm-up - and keep repeating the procedure as needed.
Eric, for under 32deg fishing I use spinning reels with low guide counts. It makes a world of difference. I have old fiberglass rods and some graphite rods that are only 4 or 5 guide rods. I wouldn't fish a rod with more than 6 guides in winter. I'm talking garage sale, swap meet type rods with rugged guides - less guides means less icing hassles and longer casts. I spray guides and line to help condition them also.