There is really no right or wrong way to do it. If you want to do it like the factory, all of the accessories should be bolted on.
The LCA's were installed along with the front swaybar(if equipped) The spindles with the rotors/drums were also installed. The engine was completely assembled including manifolds, carb, distributor, and all pulleys/pumps/belts. Cars may have had the upper/lower rad hoses installed as well.
The drivetrain was installed very close to the end of production. Components in the engine bay would already be inplace.(wiring, hoses, master cylinder, wiper motor exc...)
Like I said, there is no right or wrong way of doing it. This car is coming together nicely.