Since you have a sort of hybrid system, with Wilwoods in the back and Brembos in the rear, it seems to me that to optimize braking you'd need to do a little research to get the right braking balance.
The Brembo brakes are unusual in that they have a larger diameter rear rotor compared to the front, and that rear rotor is significantly larger than the Wilwood rear rotor. That no doubt has an effect on brake balance and torque.
Once you know the swept area and piston area, MC size, rotor size, etc., you can probably get close to what braking torque you could get at each axle. I'm sure you could do some fine tuning with pad compounds.
Since you have Wilwoods in the rear, and they are accessible, why not call them and explain what you have. They could probably get you into the ballpark as far as numbers and any suggested parts changes, as well as recommend some pad compounds for your use case and specific circumstances.