Being able to provoke the rear end is a good thing isn't it?I can still 'provoke' the back end slightly.. It doesn't feel aas sharp as the front if that makes sense - wwhat would be your suggestions from here for the rear end?
I'm surprised your front end feels less sharp. Everything you've done should help. You could always bias the rear to toe out and see if you prefer it. With the kit you've got it wouldn't take long. (I'm jealous!)
As Animaladz says an adjustable rear ARB would also help you to balance out your car.