The only way to go low and handle is really hard springs, but that comes with obvious penalties!
Your TTRS arms just push the wheel out from the bottom, so the top clearance is still the same. To pull the top of the wheel in, camber adjustable top mounts would solve that for you
-1.5 is a good amount of camber
Any more than 2 will definitely eat the tyres away if the majority of your journeys are straight roads.