Okay, I can't go any further until I decide how to handle the insulation and screenwall.
Here you can see that it is a stairstepping concrete wall, roughly half of which is typical stud construction above grade (for that matter, half of the concrete is above grade too).
The issue I can't resolve is that the stud wall portion is not flush with the concrete face. It is 4" behind the face of concrete.
Based on other threads, I am thinking I will first insulate the existing upper stud wall with fiberglass batts. Then, build another wall that is 4" thick on top of the concrete wall so that I end up with a flush wall (half stud and half concrete). Then, fill the new 4" thick stud portion with more fiberglass batts. Then cover the whole face of wall with rigid 1" foam insulation. Lastly, build a new stud wall from floor to ceiling and fill that with fiberglass batts (with the paper either pulled off or perforated).
In the end, I end up with 3.5"+3.5"+1" rigid foam + 3.5", for a total of an 11.5" thick insulated wall.
Is this making sense? Does it sound appropriate?