I would use the one with the bands in the dining room, for a softer, curvier effect to compliment the chandelier. Have covered buttons in the main fabric on the bands. For the office/den, I would prefer a cleaner line, much as you have now on the two smaller windows - no curves. If you like pleats, perhaps consider something more like this, with the button on the pleats covered in the complimentary fabric. It is the fifth one down, the green and red floral fabric: [box pleated valance with buttons[(https://www.houzz.com/photos/box-pleated-valance-phbr0lbl-bl~l_2499) Also, if it were me I would make the valances longer, and hang them all much closer to the ceiling. I would not use rods, given the number and placement of the windows.

This is a common question , have you talked with your installer or the person responsible for your window treatments?

I want to know who designed that wall around the window talk about imbalance you need at least one more of those shelves for sure. I will wait for the other pics to comment on window coverings

This is what I am thinking of putting on the French Door. https://etsy.me/2BFifF5