Hi Jay,
Coil-overs aren't a problem it is the lowering and that troughs sharpness. I had my Tein Flex-A lowered to 30mm to still me to go over speed bumps. You can stiffen the suspension to reduce the give, but it will make for a slightly more unpleasant ride.
I have the automatic EDFC system that stiffens when needed based on speed and g force.
You will still need to experiment to find out what works for you mate