The Akebono's don't hold up well to heat, I've already had to rebuild mine once. Ducting will be very helpful especially with repeated 140-40mph braking coming off of the oval. I recommend Castrol SRF brake fluid, it's pricey, but you won't have to bleed it. You might also want to look into titanium heat shields (
Hard Brakes - Titanium Brake Backing Plates, Brake Shims, Brake Heat Shields) as an inexpensive way to provide some extra protection for your seals and fluid.