Well I'm not really into kicking a bloke while he's down...
There's your first problem.
Bin the brakes as well - you'll warp the rotors & cook the calipers.
Change it to:
Front Castor = 5deg positive - the more the better. (L&R)
Front Camber = Start at 3.5 deg negitive & adjust from there, via tyre temps (L&R)
Front Toe = 1 mm toe in (L&R)
Rear Camber = 2.4 (L&R) probably too much, but what are the tyre temps reading?
Rear Toe = 1 mm toe IN (L&R). Toe out makes IRS cars nervous in the rear.
You require more rear toe - see above.
Not enough Castor - see above.
The China damper insert is junk in the AZC setup- you'll either get full soft or full hard with nothing in-between. Throw them in the bin & buy some MCA's.
As a starting point I suggest you install 350lbs springs in the front & go from there.
Leave the 250lbs springs in the rear for the moment, till you get the front end behaving like you want.
No problem, but I'm betting you won't follow my advice...