I wouldn't repot them now..
because there is no good reason or need for it..
(did you put them outside?)
they should be going dormant now, and should be allowed to remain that way, undisturbed, until spring..
I think its best to just leave them alone this time of year..
repotting now could be an unnecessary shock, right when they are trying to go to sleep in the winter.
If you knew they were FULLY dormant, it would be fine to repot..(people often bare-root plants for winter dormancy, which is essentially the same thing as repotting..but the trick is that the plants are already fully dormant when they are uprooted..)
your plants, being recently from Lowes, are *not* fully dormant yet..but if you have had them outside since you got them (which is where they should be!
they will be in the process of *going* dormant right now..and going dormant is not a quick process..it's a gradual process that takes weeks/months..
I think it would be best to just leave them alone, they are just getting adapted to their new home.
repotting is always best done in the early spring, right before new growth resumes..then they have a full growing season to adjust.
In your climate, I would repot them in mid or late February, which (as I have heard) is early spring in South Carolina.
Scot