Yay! I have brakes.
3 issues found.
Issue #1: The aluminum hub rings from Amazon are junk and not machined evenly. The passenger side protruded from the rotor hat maybe 1mm but was tight on the rotor; keeping it from pivoting back and forth on the wheel studs (due to the larger stud hole bore on the rotor). On the driver side, however, the hub ring protruded a good 3mm, keeping the TT wheel from contacting the rotor hat. Also, the rotor could still turn freely since the hub ring was not as snug as on the passenger side. The rotor could move side to side several mm before it would click against a wheel stud and turn the hub. Factor in that the wheel was hitting the hub ring and sitting 3mm away from the rotor hat...let's just say not good. I ground down the hub ring flush with the rotor using a dremel. Problem solved. Will probably end up doing to the passenger side as well one of these days for peace of mind.
Issue #2: I didn't fully seat the brake pad sliders into the calipers and they worked themselves loose on both sides. The pads were pivoting all over the place. Now that the vehicle was on a lift and I had a proper punch and hammer. I smacked those sliders until they were fully seated inside each caliper.
Issue #3: I can only assume the soft pedal was due to air in the system, since the first two issues shouldn't have any affect on pedal feel. I pressure bled the system one last time. I had a clean steady stream of fluid from all bleeders with no visible air bubbles. However, I now have pedal. It is not as firm as I would like it to be, but it is no softer than when I had the factory brakes and hoses. I'll be driving it home later this evening and will report back on brake performance.