I know it is overkill, but I am going to use CSP vented rotors up front w/ Wilwoods at the very least. There aren’t a lot of provisions for vented rotors in back with a functional e- brake, other than maybe the Coolrydes set-up. If someone knows something different, I am all ears. There is a buzz in the Hot Rod world about using a Tesla electric e- brake caliper. It is utterly mad, this madness!
Why don't you investigate using Empi solid rotors and VW Jetta MkIV rear calipers which have parking brake via cables.
You will need a proportioning valve but then most of the braking will be done by your Wildwood. Just saying