When we were all running RX8's in the old B Stock days, the formula was pretty simple: Koni yellows, a front sway bar in the 10-15% stiffer range (many just drilled an extra set of holes in the factory bar with acceptable results, Matthew and I ran a Whiteline adjustable bar on the softest setting) and the "Isley exhaust" (basically a Borla or other muffler in a single exit system).
Alignment depended on whether you have a "good" car or a "notsogood" car. Some cars, like mine, could get a full -1.7 both sides in front, others varied side to side (like Eric Jones' car) and others struggled to get much more than -1.1 to -1.2 front. That would indicate how much camber in the rear i.e. another couple/few tenths. Toe settings varied. I liked zero effective front toe, some liked to run in the 1/8" toe out range. Rear toe, iirc, was about 1/8" toe in...I may be off on that one, it has been 5 years! The rear does have some strange bushing deflection or geometry induced toe changes on squat. If bushing related, higher mileage may change that piece and, with that, the desired static toe measure. Also, we all ran the rear Konis full stiff and played with the front rebound. Don't know if I'd do that on street tires, but it was the right move on the r-comps to get the car to turn.
Fun cars, great bang for the buck, very drivable on street tires! (Hankook RS3V2 is the current "go to"...great in both wet and dry, as opposed to V1)