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.

Hi, you have a nice space to start your projects. Do you need the built-ins? In the photo it looks like they are interfering with your electric heat, your air conditioning unit and they seem a bit flimsy and busy. If you don't have a large book collection, I would take them down. I would look at medium toned wood look laminates, not too busy. You have to choose something that won't clash with your tile and with your different wood tones - trim, the beams and kitchen cabinets wood tones. Definitely bring home samples to look at in you light and space. All neutrals have undertones and the undertones can clash.

Let's have a picture of them in place, in your dining room.

To maximize your space the bench should remain on the wall side, with people sitting there, be sure anything you hang is high enough. Your table and new chandy--very different vibes. Glad you are swapping out the long shag carpet. Under a dining space I would go with nothing but the flatter the better for chairs moving, food collecting. Sorry but I would rethink the gray. You need something that brings life to the space and gray will do the opposite. Once you find proper curtain panels it may change what you want to hand on the walls. Nothing looks cheaper than slatted blinds. The panels can add a lot of softness and movement to your room if you choose a pattern. Then you can pull the lightest color from the curtains to put on the wall.