You can use this calculator to compare the brake balance. I used it to compare standard with my upgraded setup. If you fill it in it gives 63.3% bias to the front wheels. With my upgraded setup the front bias should be 67.9%, so no increased risk of locking up the rear wheels.

http://www.tceperformanceproducts.com/bias-calculator/

Quite some people have 362 mm AP 6 pots on the front with 330 mm 4 pots on the rear. I have also checked what that gives and it only gives a front bias of 52.8%, which in my opinion is very dangerous.