If you can beat the cold, I would move them now, making sure that the bud union, that knob at the base of the canes before the roots, is below grade 2 to 4". Cut the canes back to make the move easier. The roses don't need them now anyway. Water them in well. I uasually plant in the native earth, and any ammendments I add are placed on top. If you have some mulch like oak leaves, which will not mat or break down easily over winter, cover the rose canes with it. Some people use soil from elsewhere, but that is too much work for me.
You shouldn't have too much trouble. I just transplanted 15, and have another 5 to go but no where to replant them.
Cheers,
Steve.