I'm a little late to the game, but...
You really don't want to store the car with the suspension at "full droop". The suspension bushings rely on deflection of the rubber throughout their range of motion. All your suspension hardware should have been tightened at normal ride height, putting the rubber bushings in a 'neutral' or unloaded position at ride height. At full droop, the rubber bushings are flexed to a position that they do not normally experience, and the rubber us put under a lot of load/stress. This can damage the bushings.
If you want to lift the car off the ground for storage, it is best to use a lift that keeps all the weight on the tires, or lifts from under the rear axle tubes and front control arms.