Yes, it will aid in the handling and it will help with the total suspension package.
Lowering with just the springs will cause excessive camber and uneven tire wear up front and that is why we use our strut mounts, in addition to being stronger they have room for camber adjustment, the stock ones do not.
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The dampers control how the springs oscillate, the factory ones are matched to the factory springs. Some springs will work well with the factory ones, but upgrading is definitely worth it in terms of ride quality and performance both.
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