This is a nice informative thread. I do agree that ABS was not the culprit here - none of the wheels had stopped turning, which is what the ABS looks for.
For track use, I would certainly recommend the Hawk Blues over the HP+. The Blues handle heat better, and are not that hard on rotors. The HP+ is a better autox pad because it works better at lower temps.
I had a Supra TT I tracked for a few years, and sold the car with its original rotors, having used HP+ pads for autoxing and Hawk Blues on the track. The car saw many track days, and time trials at the track, on a track known to be hard on brakes. I did use front brake cooling ducts. I also used Motul 600 fluid, bled the brakes every day, and inspected the pads every track day. The Blues will last many days on most tracks.
It's a good idea to shoot your rotors with an IR gauge to see what temps you're getting to the rotor. Front brake cooling ducts would be worth looking at in our cars, since we can go pretty fast down the straights. If you're seeing rotor temps over 800 F, I'd certainly recommend ducting. Ducting will extend rotor life, pad life and wheel bearing life.
Moral of the story - if you're going to do track days - take the time to make sure your brakes are in order. Y'all be careful out there.