I agree with Annie. We have a similar situation and we placed the rod at the proper height for the lower ceiling and then just carried it around to the other wall at the same height. Your eye will stop at the rod and the ceiling height differences won't even be noticed.

I'm really liking the Capitol White. I think it would look really good in the living/dining area. Here is one picture of some sample boards. Not really large enough to show context, but it works with the space. My concern is I think it might not play nice with the color in the kitchen. Truth be told, I'm not in love with the kitchen color but I don't want to repaint. I've uploaded a photo of the sample boards in the kitchen. Last picture of downstairs bedroom. The plan would be whatever color is in the living room/dining area would flow up the stairwell. So I'd like the new color to play nice with bedroom color. I think it does. Finishing the stairwell massive painting project is next, and then I can get the flooring all put in and be done with the downstairs. I also have sampled out a few other whites too, but will save those for later.

A round or square end table big enough to provide useful space for both sofa and loveseat would work, with a large lamp. I have a couple of live plants under a similar mini-split ac unit and also near hear registers and they don’t seem bothered as long as i don’t let them dry out. Some pillows that pull the color from the very pretty rug would be nice, maybe the pink? Or green? Drapery panels can often make the difference between a comfortable room and a cozy room that feels finished IMO. You might want to check out curtains in linen or cotton from Ikea or Target, they’re quite inexpensive and look decent for the money. Mount the rods near the ceiling molding and have the drape just barely touch the floor. You may have to shorten, they make iron on tape that make it easy to hem without needing to sew. A cream color would look nice with your gold-beige walls. Mount the rods wide enough to push the drapes back off the glass for maximum light and views when they’re open. You may never need to close them as you have blind for light and privacy control. hope this helps.

Floor length for sure. In terms of the countertop - I don’t know curtains are the best option for that space? I may consider roller shades instead. And do curtains where you can have them done correctly.