IF you want to improve.
SPL arms.
Alignment spec's.
Front; camber -2, Caster +6, toe .06D in
Rear; camber -1.7, toe .06D in.
This will give you a set up that will live on both street and track.
Hotchkis sway bar. You need to stiffen the front up. Stiffer bar induces more understeer.
Your dampening isn't helping by being soft. Too much weight transfer. Stiffen the compression in the front and stiffen the rebound in the rear.
DO NOT use the VDC. Turn that motherfvcker OFF! What happens with it on. When it senses the rear stepping out. It WILL apply one rear brake caliper to straighten the car out. It WILL have you pointed in the wrong direction.
The Mich PSS tires will hang for about 20 to 30 minutes before they lose grip and begin greasy.
Get a notebook and start taking notes. Weather conditions, tire pressure, fuel level, anything that will affect the handling. After awhile, you will see a pattern.