Re: Over wintering nucs.
I've wintered nucs the last 2 years in WA state. The first year 3 out of 4 made it through the winter. Last year 7 out of 11 made it. This year I'm prepping for 25-30. I winter in single deep 5 frames. I make sure they are heavy going into winter and have a frame of honey stored in the freezer for each. They get the frame of honey in early Feb. The big thing with nucs is late winter/early spring they can starve out pretty fast so you do have to keep an eye on them.
Beekeeper? Shoot, my bees keep me!
9 years, 100 hives in Western Wa State