You should probably get a least some better lower control arms but the biggest issue is this:
The factory springs were meant to work as a system and together just like the Steeda Sports. Despite the factory hardware not being exactly brilliant, they do complement each other just like the Steeda springs do. The spring rates are all out of wack. Plus your rake has increased as well, throwing off the dynamics of the car. Because of this, your car is now very front domant in geometric balance. Choose one: factory springs all around or the Steeda springs all around.