I don't think there much to do other then what you mentioned.
A little bit of carb cleaner additive in the gas can't hurt..
Also try to avoid running it for short periods, especially if you are riding hard. In this cold weather it can cause water to consence in the oil pan.
So just make sure you are running the bike for a while, long enough to get it nice and warm, so any water can burn off.
-=Welcome To Canada=-
2002 Green 6R
1986 Gixxer 7/11