The reason the Pro-kit is set up to drop the car a bit more in the front is actually so it will look even. The front wheel opening is a larger diameter, so if you lower the car the same amount in the front and rear it looks as if the rear is lower. Nice little trick that Eibach does on your behalf.

I would also consider upgrading your shocks, if only because your stockers are now 13 years old. They're probably not performing as well as they used to anyway, and the lowering springs will place more demands on them with a stiffer spring rate and less suspension travel.