'75 Duster B body front brake upgrade impressions wanted

I am looking at doing this one step at a time. 11.75" first. My rear brakes on the 8 3/4" are 10" x 1.75". I do have a backing plate to drum set of 10" x 2" in the garage. So it sounds like the Dr. Diff stage 2 setup will be what I am looking for. The tires are the BFG G Force Comp 2 A/S 215/45ZR17 up front. These clear the fender. Putting large drum brakes on the rear (more coefficient of friction) means that there needs to be more rear pressure bleed-off, yes?