I FINALLY got around to testing this setup - for that I apologize. It doesn't really help you at all if you don't get some feedback....
anyways...
I found this car to have a terrific amount of understeer - even for an FF car. Normally I don't get so excited about a tune - but after testing and tweaking this car I think I'll be able to build up my own FF cars even better.
Now I'm not sure if you wanted to keep the extreme camber for looks or if there was a purpose - but I got rid of it. For a good grip tune you won't be using that kind of camber, it is totally useless. I'm definitely a fan of using minimal camber to adjust turning in a grip tune because you want as much rubber touching the pavement as you can get.
Now the way you have the suspension setup right now - the car doesn't want to turn at all. I've taken about 30 minutes or so trying to work with similar numbers as you and simply can't get something to work. So I scrapped your numbers completely in favor of starting out with my own 'base' numbers, slowly tweaking it from there.
I think if you try out my setup, you'll poo yourself when you realize that this car can actually turn.

The biggest problem I had was going from a high-speed straight into a sharp 90-degree turn - but I think tweaking your brakes will help with that.
Spring Rate: 2 (Front), 5 (Rear)
Damper: 4 (Front), 2 (Rear)
Stabilizer: 0 (Front), 2 (Rear)
Ride Height: -30 (Front), -30 (Rear)
Toe: -3 (Front), 1 (Rear)
Camber: -0.15 (Front), -0.15 (Rear)
Steering Angle: 2