Can't read the room sizes, but there should be enough space for a dining table in the main living room.

My light casts it's frame shadow, but it's not that noticeable because it's way up high (see pic) mine is in a double floor height ceiling. I think if the pendant was lower, then shadows would be more prominent. Also, my light isn't as busy, so the shadows are less. Overall, my take is the busier the pendant and lower the height, you'll see more shadows. (don't mind the paint job, still in reno)

Your room looks large and lovely but with an entrance at one end and a fireplace at the other can seem a bit long. Firstly take EVERYTHING out. This will show the room in the best advantage and get rid of clutter. Only put back things you absolutely love. I would put two sofas or a sofa and two chairs (they don't have to be a suite) in front of the fireplace OR get a solid coloured L shaped sofa as it seems you are orienting the room toward the TV. You could then put a nice rug under a light-feeling coffee table (maybe glass and wood to pick up your chimney breast) in the middle. This would allow you to get rid of the multiple small side tables. I would lighten up the alcoves alongside the fireplace, either paint or light wallpaper. Get a proper piece of furniture for the TV to stand on. TV stands are ugly. There's lots to choose from. Try IKEA. Take down the heavy curtains and put in Roman blinds in a print fabric you love (try to find one with at least 3 colours) and coordinate with your rug. You could then use colours in this to make/pick throws and pillows. At the end near the door you could put in a small table and your rocking chair and make it like a separate area for music or reading with a nice standing lamp. Get some inexpensive drum light shades to update the lighting and put in another standing lamp by your sofa, as mentioned above, and lower your pictures to eye height. Good luck!

Here some pics from the "balcony" that could form a room maybe like this...