I am struggling with a design plan for bookcases (or something) for this wall. They will be custom. Can't find what I am looking for online. I am thinking cabinets on the bottom and shelving above and maybe framing the window for a window treatment and bench...not sure how to make it work. The window spacing is not optimal, I know. I am hoping someone has some ideas. Thank you in advance.

The wall is 21' long. The window is 6'. The bench is 20" deep and can be removed. Ceiling is 10'.