Caster I run in the rear position with the ksport top hats front and back. And as for toe in the rear I like to run 0. For the front I run about a +1/8" for smaller tracks, and about a +1/16" for large tracks. What degree that comes to I am not sure. Ever since I switched from - to + my car throws itself into the corners, and under full throttle it just polers through the corner instead of pushing. I also am not concerned about tire life too, since I heat cycle through them before I ever get close to using up all the rubber.
If I need anything more or less than that I can control it with tire pressures or my rear adjustable sway bar. Definitely not a daily driver set up, but I feel I am the fastest when I am putting the least steering input into this fwd car. Its a great balance of the rear of the car wanting to come around and the front end ever so slightly wanting to push but pulling the rear end through the corner giving me a perfect 4 wheel drift and polering though the corner under 100% throttle.