Extreme cold flying

Hello everyone!! So it has been my dream since I was a kid to go on a potentially dangerous journey to Antarctica (dunno why, probably a movie). I'm not wealthy enough to buy a new plane, so I would rather buy an older model (Probably a cesna 210 or piper cherokee 235) and modify it to my needs / to fly from Chile to Antarctica.

I'm aware of the precautions needed for flying a carburetor plane in extreme humidity, but have no idea what sort of precautions you would need to take for extreme cold flying.

I would like to leech of yall's knowledge lol

Thanks a bunch for your time!