I am lowering mine with Novitec Springs - Adaptable for the Lifting System which i have.

You can adjust the height you drop it. The trick is what setting to set the springs before you install. It may take a couple of times or maybe 3 times installing to get it what im happy with.

Likewise with yourself, i only want a mild drop to remove the arch gaps & still be able to get around.

If you lowering it on its fullest setting, then yes, every dip in the road you'd probably scrap haha