I forgot to mention...I replaced the rear calipers and rotors with the ones that come on a GT. The discs that came on the car were like little pie tins with no cooling vanes.
LUC is right, the standard calipers and rotors are smaller than optimal. Here is my experience with a similar situation:
My 16-yo son has a 2019 EB Prem non-PP (lucky dude). My 20-yo daughter has tracked it twice (VIR and Summit Point) . I put Hawk DTC-60s on it. The main reason I chose that...
Personally, Iād go with a larger front bar before new shocks and springs. I think youāll notice a handling change. Then decide how much stiffer you want the springs and dampers. Just my $.02.
You want progressives for the comfort. Linear will have a harsher ride. If you were going to be tracking a fair bit then the linear would be a stronger consideration. Also consider an anti-roll bar first and then see how you like the handling before springs.