Think about hotel rooms. They so often have a room-width black-out curtain ... and behind it a thin sheer ... and usually some type of non-moveable header (either cloth or wood) ... and they pull open so nicely. While staying in a hotel a year or so ago, I decided that's exactly what I want, so I took a good look at the hardware involved. Hotels have ceiling mounted tracks. Something like this: This ceiling-mounted curtain track can be supported every 2-3 feet, eliminating any possibility of sagging rods as years go by. You can cut them to fit your dimensions, and they're even available in around-the-corner styles. The negatives, of course, are that you'll need floor-to-ceiling curtains, and you'll probably have to do some sewing adjustments to the curtains yourself. Still, I'm going to do this in my bedroom, where I expect to open/close the drapes frequently. I wouldn't do it in, say, the dining room, where I'm going to use plantation shutters and curtains that'll essentially never move.

Looks like a 12' door? If you have regular pinch-pleat drapes and want to stack off the glass that translates to about a 16' rod. You can find decorative traverse rods in that length here.

I would put the rod to be even with the top of the cabinet.

Since you're putting shutters on the window to match your other window, I would just use the drapes on the sliders. If the drapes aren't needed for light or privacy purposes though, I'd eliminate them completely and leave the sliders bare. Your wall space is fairly limited, and the panels are in the way when opening and closing the door.