An update. I was on the phone with a brake expert two days ago. What he said shocked me. He said Alcons are very good. A smallish engineering-based brake company. Perhaps a little more expensive than others.
AP is also very good. Perhaps Brembo and Stoptech next. Some biggies in the biz (as in lots of volume) will wait till they are virtually out of stock before they do a big manufacturing run and can cause supply issues.
As an aside, I have 14" (355mm) Trophy Stoptechs on my STi. Stock Brembos and seven pounds lighter (each) 316mm (12.45") Gyrodisc floating rotors on the back. Stops well.
The expert said "go big". He said testing showed that bigger is better. Better feel before lockup/less lockup. Weight is not that big a factor (except perhaps for autocrossers) and you can sometimes order thicker rotors, with a bigger airspace (and thus lighter) to compensate for the larger diameter. Thicker pads require bigger calipers. Seldom do pads need to be more than 20mm thick.
Many brake companies use 180mm, center to center, mounting hole spacing for calipers, thus making many mounts standardized to this dimension. One brake companies adapter may work with other company's brake calipers. He wants to see caliper mounts shim-able in both axes for perfecting the alignment to the rotor.

Perhaps the most shocking comment: Use 13 inch on front and back. SAME brakes, front and rear! Less spares.
Use a proportioning valve. With a very low CG car there is not that much weight shift during braking. Braking force can be relatively equal-front to back.
No need to do more than four piston calipers. He worked for Alcon and likes the "B" type for our car.
He suggested I look at "NASCAR brakes". Good prices on Brembo and other "NASCAR" setups. A number of brake companies make a "NASCAR" brake setup. NASCAR cars are only 200-300 pounds more than our car @ 2000 pounds.
I may go with a Tilton floor-mount pedal box based on what he had to say about pedal boxes. They are high-tech, with advanced features for the hydraulic cylinders with the 900 series. Good bang for the buck? They are pricey but gorgeous and full-featured.