Offset fireplaces aren't really planned to be main focal points or centers of furniture arrangement for all of the furniture in the room. Particularly if you are going to use midcentury furniture, you can ignore the fireplace to some extent. Not completely but you don't have to center the room on it.

I would take down that counter with the stools that is blocking the walkway and then take the wall down from the frig over and put an island between your sink area and where your table is sitting. Then I would use the room by the front door as a dining room and the back room with the fire place as a living room (or reversed depending on which one is bigger).

Here is a picture of our room as we have it laid out. You can see the large ottoman that we use. It is great for toys, blankets, pillows and just about anything. Below you will also see the 3D rendition of your formal dining room converted to a TV room. Also, this is suggested because having a formal dining area so disjointed from the kitchen area often means that it is seldom used. I know because we used to have a formal dining room like that. We used it maybe 2 or 3 times a year. Once we converted the room it is now used everyday. Converting the front room is the surprise. So here goes: Here is the copy of the 3D floor plan copied from your blueprint. In this you will see that the currant family room has been converted to an open and easily accessible gathering place and the formal dining area is spiffed up for both everyday use, gettogethers, and holidays. More 3D pictures below: You will find the following in the layouts below: Three 51 inch love seats. I would stick with the 51 inch love seat because it keeps the room open and easier to move in and out of. If you get larger ones it starts to make the room feel smaller and is harder to move in and around. Two couch side tables Two floor lamps One ottoman with reversible trays that when turned over become seat cushions and have storage beneath them. One basket with extra pillows and blankets or can be used for toys, games and so on. One entry table with one table lamp on it. This table can be used for additional storage in the drawer. There is a box underneath for additional storage. One large wall mirror to add more reflective light and become a faux window on that wall. The dining area speaks for itself. One nice large framed picture over the fireplace. Please know that the style and colors are not in anyway suggestions it is just for furniture placement and suggestions only. Hope this opens your horizon and sparks inspiration for what is possible in these rooms. Best wishes, Marcie

I have a post up now to reconfigure my living room - so this might be the blind leading the blind... but here are my thoughts. I agree about 2 matching slip covers for the sofas, something light/neutral. The sofas looked cramped – can you pull the lighter one a foot closer to the TV so the arms have some space? Next – declutter, get rid of anything you don’t need/want. Maybe buy some storage piece for games. Those big dark green drapes are probably blocking all your light – I’d replace them with cream/white. Good luck!