At least you have the right attitude about it, by trying to prepare for it.
I too once did the "unthinkable".
I loved my first ZR-1 so much, that I drove it year round. Now South Jersey winters versus Rochester winters are two different things altogether but snow is snow.
Br thankful you have a C5! The 92 ZR-1 was the first year with the new " ASR". It used to be a real hoot observing how confused the computer would get trying to go up my steep driveway in the snow. Your IPOD has more processing power than that early ASR. It would just give up after awhile!
Back to your question. My 92 had clearcoated, painted factory wheels.
I gave the wheels a thorugh waxing in November, and again in mid winter when you get that nice warmish day.(32+).
The car rec'd the same treatment.
The idea of a car wash with a good underbody and wheel spray is good, but you should periodically hose it down at home when the weather permits, to get the undisolved salt off of everywhere.
Rainy days are your friend in these situations, and hitting stnading water safely does a fine job of getting most of the wheels areas cleansed of the evil stuff.
Bottom line: normal maintenance, just more of it!
Enjoy driving the car. I found that 92 to be very predictable in the snow, but not so hot on the ice!
If you have the funds, winter tires would be great for you and your plans!
Enjoy driving it!!!
Although we all cringe, we are all also jealous!!! Trust me on that!
They are cars afterall, and "back in the day" one would not think of parking the Vette in the winter, and rain, hell they all leaked and evryone knew that because they drove them.
Good luck, and just keep it washed and waxed as often as possible.
I used to go to the car wash, then put it in the garage and do the waxing.
Now you drive "baby" carefully now in that snow, and don't forget to get 100's of pictures of it to share, easpecially with and for your 6 year old! My 9 yr old would kill to see the Vette out in the snow!
( Then again, he might kill me for doing it!)
ENJOY!!!

Marty
1FUNZR1