Do you own or is this a rental? The pix look a little stretched like realty ones. Since there is a rad between the doors, forget putting TV there. I'd keep the dining close to the kitchen and put the sitting/TV area to focus on the long wall. Start with the fun project of finding a knockout chandelier to hang from that pretty ceiling. Is there a fridge under the microwave? I see only one wall outlet behind the door and one above the counter, so you'll have to use extension cords and cord covers along the baseboards to have enough lighting here. Consider floating your sofa facing the long wall and TV. Then use a drop leaf table behind it for dining. You'll be able to open it all the way for entertaining. Anchor your seating area with a rug 2-3 feet wider than your sofa.

I would create a "foyer" by floating a 3-seat sofa or a reversible chaise sofa facing the two windows with a flat screen TV on a low credenza. Hang the clock on the wall opposite its present location. Flank the large front window with a pair of fabric armchairs, a new side table and a table lamp. A new rug should be at least 2 feet wider than the new sofa. For proper installation of a dining chandelier, your table will need to sit under the current fixture. Try doing that to see what you can achieve. Do you want to hire an electrician to remedy the offset? You can probably find a paired semi-flush and a pendant or chandy for both your ceiling lights and maybe the kitchen too. Once you find the seating and rug, we can find a new, brighter paint color to really bring this room out of the shade!

The table top in your inspiration pic caught my attention. It's not the usual furniture showroom table top. I really like this cedar "countertop" and was wondering if something like it might work as a table top or as a top of a rolling cart island that could work as kitchen prep space and/or guest dining if not as a table. http://www.devoswoodworking.com/designing-wood-countertops/wane-edges.html Legs could be bought separately. https://carolinalegco.com/products/x-metal-table-legs-set-of-2-modern-industrial-legs-custom-sizes-available?variant=32186224640097&currency=USD&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&utm_term=&utm_campaign=DR_PLA_Smart_200%25&utm_source=adwords&utm_medium=ppc&hsa_acc=7051262680&hsa_cam=9915659242&hsa_grp=103137792649&hsa_ad=432122759881&hsa_src=u&hsa_tgt=pla-296303633664&hsa_kw=&hsa_mt=&hsa_net=adwords&hsa_ver=3&gclid=EAIaIQobChMI6p_wwNPU6gIVgbbICh0T8w-jEAsYAyABEgIkX_D_BwE

You've received some great suggestions. I think lighting is key. I would eliminate the bare bulb floor lamp by the fireplace and find some attractive lamps with shades. One for the console table, a floor lamp for the lounge chair and a table and lamp for the arm end of the sectional. I would budget to have an electrician come in and move the boob light in the dining room to center over the table once you've reduced its size. Change that to a lovely chandelier. If you can't afford all of that, you can swag a chandy from that connection to a more centered position as in the kitchen below.