This is my first Infiniti and the suspension is a bit more complex than the Hondas and Toyota trucks I've driven in the past. Just some basic questions so I know what I'm getting into. All suspension components are stock except for a set of Hotchkis bars.

Front camber is not adjustable, but will be affected by changes in toe.
Front toe is adjustable.
Caster is not adjustable.

Rear camber is adjustable and will be affected by changes in toe.
Rear toe is adjustable and will be affected by changes in camber.

In general, some camber in the front and rear is good. A small amount of toe-in or no toe for the front is good. No toe in the rear is good.

I'm using the FSM specs as a guide and I'm shooting for .04-.05* of toe-in front and zero toe in the rear with about -1* of camber. Sound good? This is a daily driver that won't see track time for quite a while. I do regularly take the "long way" to work that has fun back roads that are more entertaining than the interstate.

 

I'm lowered to zero fender gap and have mine set close to -1, it's -1.15 front and -1.1 rear w/ just slight toe-in at -.05 give or take. I think it's good to have just a bit of toe-in F&R.
I run pretty wide 295 tires in the back and they're wearing perfectly so IME these are good alignment specs to shoot for. I believe the coupe FSM specs are a bit higher for camber at around -1.5.
You're correct in that the front camber/caster is fixed. The rear toe & camber has concentric bolts for adjustment but it's a minimal range. Any drop more than about 1.25 inches will max out the concentric adjusters and will be at or exceeding the max negative camber & toe spec.