I have a setup which I've been playing around with and feels good to me.
All upgrades added except for increased rigidity.
536bhp (Can't remember if this has been power restrained, will check in the morning) - (EDIT: This is full power)
Comfort Hard tyres on the front, Mediums on the rear. (should work with other compounds)
Downforce - at minimum levels
Transmission - set for 190mph maximum output
LSD - 13/54/44
Suspension
Ride Height - Fully lowered at both ends
Spring Rate - 18.9 / 17.8
Damper Extension - 10 / 10
Damper Compression - 9 / 9
Anti Roll - 1 / 1
Camber - 2.0 / 3.0
Toe - -0.15 / +0.35
Brakes - 7 / 10 (I run with ABS, so if you don't just lower these to whatever you would normally use)
As I say, this is a setup that I find suits me, but may not be to everyone's style. I'll post a Indy Road course single lap score and video tomorrow.