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 stay away from a sectional and go with a sofa and 2 chairs not matching to the sofa. That DR is going to be a problem you will need to go very narrow with a table to work in an 8’ space or you will need to push a table against the wall and only pullout when you need toyou could do a 36 x 72 table that would sit 4 nicely without pulling out You have lots of places for TV in the LR . Do you need more storage or some display I would suggest a Besta sytem for a wall with the TV maybe on the right hand wall. The sofa facing the TV and a chair on either side with a nice coffee table that layout works well for conversation and much more comfortable seating than a sectional.

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

Is this for your everyday table needs? Or if it is for entertaining guests, how many do you want to seat at one time? How many people do you want to seat in front of the TV? That's a small table 42" x 30". If you imagine using a 24" width X 12" depth place mat for each person, you see that your table fits 4 people (one on each side) with a 6 inch space down the middle for serving dishes. There's no point in having all that bench seating if the table only fits 4. Consider getting 4 chairs - much more comfortable than bench seats. Be aware that living room side chairs sometimes have the wrong seat height to use as a dining chair. And if your table has a box apron all around, the arms may not fit under the table.