Finding the sweet spot.

[Ganjie]

Hey everybody, I own a 2017 st and have been looking for this cars suspensions sweet spot. I have intention of purchasing whoosh coilovers and have already added the front Trac and strut tower bars. I've been reading a couple threads about making the rear too stiff causing early onset break away. I'm not trying to increase the possibility of snap oversteer, but I and with the plethora of k bars, trunk bars, torsion stiffening bars, etc. Idk what's worth my money and what would be a net negative on the cars performance. Any suggestions would be appreciated.