You've either got a long time to sell it, or put on a cover and just start it twice a week for a few mins. Problem is with heavy rain the cover will tend to just stick to the car, after a while that might damage the paint. Rust or even mildew type stuff can also build up under the cover also. Car covers aren't really ideal, especially for a long time.
Tyres will tend to go also if rims are not removed and not put on blocks. So either put some crappy tyres on there, or be prepared to buy 4x new tyres in 12 months.