My ride is on H&R springs. They are the biggest drop and a stiff linear spring.
I scrape my downpipe on the taller speed bumps...not cool.
I still run the illumina IIs.
TEMS isn't very noticable once you move away from OEM spring rates.
Even though H&Rs are stiff, the supra will not be the honda that bounces, and ride quality is way better than an air bagged pickup.
I'm running Whiteline sway bars, medium setting up front and soft setting rear. They keep the car flat, and is much more predictable handling over stock sway bars if you happen to swing the rear out accidentally.