[dmforcier]

I think it depends on how much sun they will get during the winter. Short days and lots of overcast will make the production slow way down. If you think they will get enough sun, then pot up. Otherwise, I suggest that you trim them back and leave in the small pots for the winter.

Be careful not to let them stay wet. Peppers take much less water in the winter. Let them tell you when they want water.