I would consider my car extremely balanced with stock sport tires, Dinan stage1, m3 lower control arms and LSD. The LSD really helps in control of over/understeer. I wouldn't change the balance of my car at all.
You may want to consider autocross. It is the best/cheapest way to learn how to balance your car at the limit. I think it is even more instructive that track time, at least it was for me.
M in love