Unfortantulay, its a price you have to pay!
It can be reduce by using a softer spring, pedders are better for that then king.
You can install softer bushes, but it will reduce handling by alot... softer though.
You have to under stand the physics behind it, if you reduce the amount of spring, oyu reduce the amount of dampening the car has for bumps.
Start buy putting shorter throw shocks in to match the throw of the spring.
I have Super Low King Springs, Shorter Shocks, 18"s and nolathane bushes throughout the car, it rides like a ****ing pig, but, it looks great and under cornering, handles awsome, i feel stuck to the road when i have good tires on... and when i dont, there is hardly any roll when sideways
basicaly, you cant really go lower than stock without increased harshness... thats just how it works...
So,
Get Shocks and New Bushes... thats it mate... maybe try softer springs..
aZk.