Re: Hive Weight going in.
i'm a little south of you, but on a ridgetop at about 1400' asl. i have had single deeps with only 6-7 frames in them make it through winter, but had to give them sugar patties in february.
i agree with 375, if your single has the outer 2-3 frames on both sides full or almost full of honey they should be alright.
if the second box in your double is full of honey, with more on the outside frames in the bottom box you're in great shape, and you may be able to donate a frame or two to the single if needed in late winter.
by weighing them now, you can reweigh in jan-feb and compare to give you an idea as to how much has been used.
journaling the growth of a treatment free apiary started in 2010. 20+/- hives