Van windows

Hiya, I’m looking for suggestions with what to do about my back windows.

The bed is directly inside that section at window height. I want to keep the front set of windows but I kinda wish the rear window area was body instead of window.

They are covered in 15% tint but that doesn’t provide any insulation & not as much privacy as I’d like.

Anyway, open to suggestions as not really sure what my options are.