Agree with above, how ever, I'd use a 'smart charger' that floats and monitors battery condition. This is something that can have a pig tail attached to the battery or the leads under the hood, the charger plugs into the connector at the end of the lead. Easy on and off.

With respect to tires, I previously have seen curved mounts that you drive up onto. Imagine something akin to a block of wood under each tire with an arch shape that compliments the tire shape. Simply drive up onto a set of four. They could be attached to the floor allowing the driver to park on them everytime.

Dont forget to flush the brake fluid, engine coolant and change the trans fluid as well.

Keeping it in a dry garage under a cover will be good long term storing.

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85 300D 3 pedal. Current project.
83 300TD (need rear wiper assembly dead or alive)
84 300SD Daily driver
85 300TD almost 400k miles and driven daily.
98 E300D *sold
86 300SDL *sold and made flawless 10 hour journey to new home.