I would make sure your tires are inflated properly. It is a toss up between not putting in a battery until you are ready to travel verses putting one in so you can move it in the driveway to rotate the wheels. But then you would need to let it idle until it's up to running temperature... so I think my choice would be to let it sit with no battery. My DP sat for a year once and the only issue was it took a bit for the air brakes to release because they had probably rusted to the drums. In your case I would make sure your emergency brake is off and block the wheels if needed.
Dave