There are many lowering springs out there, which one does it for you?

Most cars can be lowered about 1.5 inches without complications. Beyond that, changes in a severely lowered car’s suspension may negatively affect ride quality, tire wear and increase the risk of bottoming.

I would just want to lower the front slightly. The rear seems to already sag.

as long as I'm lowering it with a coilover system, and not springs, it won't matter how low....adjustable!