I would like to get curtain panels for these windows but am having a hard time figuring how to do it. The functionality I would like are maximum light during the day and darkness/privacy at night. Here are my ideas and my concerns.

#1: Treat like one large window and push the panels to the edges when not in use. The total measurement from wall to wall is 128inches. But, I haven't been able to find curtain rods that is that big and only require one bracket in the middle. How do I get the curtains to move all the way to the edge if additional brackets are required?

#2 Treat like three windows but does that mean six panels? If so, I worry that the stackback will cover too much of the window and not let enough light in.

#3 Other ideas?

Thanks for your help.