My winterizing (when I lived a little further north) consisted of the following:
1. Either drain or top off the fuel tank ( topping it off was the prefered choice since you could go out on fairly decsnt days and start it up and let it run for 20 minutes or so)
2. Support the car on stands at four corners of suspension and another one at center point (this prevents flat spots on the tires, if tires removed it also prevents suspension settling)
3. All other fluids topped off as well, oil, trans fluid, brake fluid, antifreeze, etc (helps making spring unveiling easier)
4. Either remove battery and place on a shelf or hook up a maintenance charger.
5. As for vermin deturing... a few traps in the trunk and under the hood never hurt ( just remembre to keep an eye on them periodically for trapped mice). I also add a aluminum pie pan of charcoal brickettes to absorbmoisture and foul oders that may have been missed during a cleaning.
6. A dust cover, I do not suggest putting one on a car that is not under a shelter or garage. Even the slightest gusts of wind moves the cover and it will act like 2000 grit sand paper on your finish.