Did some more looking and found out that EBC offers a slotted rotor called the "GD Sport" that claims to run 100-200 degrees Fahrenheit cooler than a blank face rotor under heavy braking.
https://ebcbrakes.com/product/3gd-sport-rotors/
At less than $10 more expensive than their blank rotors I linked earlier I might give them a try. Part number GD7013.
https://www.amazon.com/dp/B000CGPK16
I've always bought blank face rotors for a few reasons. Mainly because I've always heard that they're more resistant to damage and that the more surface area you have touching the pads the better. Also that slotted rotors are more difficult or impossible to resurface should the need arise. But if I'm going to be running a more aggressive pad that beats them up anyway I don't see much use in worrying about that last point. I'm thinking that the EBC GD Sport rotors combined with their Yellowstuff pads might be a good performing combination that would allow me to run at least a couple sets of pads before having to replace the rotors again.
This situation is really just becoming a fun quasi-science experiment at this point, I want to see how good the stock JB6 brakes can be.