I have the same intended setup as you, but my build is still a long ways from being complete. Somewhere I came across where user mtnickel said he was also using the same setup, here are his responses to some questions I had via PM:
"I'm honestly just on econo semi metallic pads for the street. Excellent initial bite. For the street I think it'd be hard to fade them, at least the way I drive. If I were to track, id get a different set, but for street and autocross they are likely fine. Centric cheapo. sorry that's not more help. May help that I rebuilt rears and greased them all nicely. I wondered if those that complained of bias were on an old crusty set that may be ceased."
Then a couple months later....
"Now that my brakes have bed in a bit more, I seem to have lost a little rear balance . Even all the way rear the front's lock up first. Perhaps the front pads had more glazing, or the fact that they are a much larger pad area means they broke in slower.
Braking is still very good, but i'm a little disappointed i don't have enough bias to lock to the rears."
I think if some specialty pads are found and used it can be a pretty well biased setup... just sourcing those pads, if at all possible, is going to be the biggest challenge.
Edit: '82 rear brakes are different than the '81 rears mtnickel and I were discussing - looks like there are plenty of pad options for you.