Big Window on Right:
You mentioned a drop-down curtain on the left side, with a soffit, perhaps. Along with the pad concept and the bi-fold doors consider a similar or matching drop down curtain. Especially if you didn't build the "north" closet, it would be very open with the curtains up.
I'm still waiting on what I was told was a good pad solution--but we can produce any of this in our facility as well--our head of the sew shop is brilliant. It might even be worth it for you to talk to her.