What's the question? Are you looking for advice on placement or suggestions as to what to buy? Is the space shown include the dining space or is that not in this photo?

Another idea would be to draw the floorplan in scale on a piece of paper. Draw basic furniture on another paper and cut them out. Play with the furniture to see what could work for your family. Imagine yourself walking around in it (about 90cm wide walkways) and doing your daily business (hobbies and such). Also think about the sun shining in. And meanwhile create some ideabooks on here with styles and interiors you like. Use as many searchword combinations as you can come up with. Good luck!

If I am having trouble finding a rectangle glass top table I usually order the glass from a local (to the location of my Client) glass shop and then the base from one of my furniture vendors. a dark table with your light chairs should not feel dark given that it is in a room with what looks to be lots of light with the large glass door and side window. I do think the glass would be perfect for the area. What size table are you thinking will fit the best in the space and for your needs?

have your dining near the kitchen as it's better for accessibility. TV should not be opposite any window to avoid glare. keep the tv in the center and living room around it. Do not divide the space with a divider since these days the trend is to have open floor plan. If you divide then the space will look small.