I would like to start by saying storage is easy!
Here is what I do:
1) Top off fluids and grease points.
(Change
oil 100% when it is pulled into garage to prevent acid attack internally)
2) Add gas stabalizer
3) Clean the car
4) Optional: Jack the car off wheels to let weight off springs and bearings etc. This requires 4 jack stands and a jack. Usually takes about 20 minutes or so and it makes it easy to get under the car for
oil change.
That is it, the body will not suffer any effects from the cold. If you cover it check it often for mice. I open a box of moth balls and place it under the car as it keeps them away. By placing underneath the car, not in it, you will avoid moth ball smell next spring.
Best of luck!