Bonsai Nut
Nuttier than your average Nut
It's the same with people... I see immigrants with parkas on in September the first year, and by the spring of the next they are walking around at +6 C in T-shirts like the rest of us. Provided that you are willing to acclimate, the winters don't have to be something that you loath.
Growing up outside of Chicago, you accepted Winter as just part of life. However, I have gotten really used to Southern California. But what I don't like isn't so much the lower temps - it is the shortness of the days, which affects us all.
I would err on the side of conservatism, considering the work you put into a single tree, what is a couple of hours of moving trees around?