What is your question exactly?

I would make the dining room with the dark dining set into something else - like an office, craft room, music room, library, etc. That room looks like a central room in the home. Therefore, what ever type of task you give that room, make sure it has the functioning parts along the walls (not in the middle of the room), so flow is maximized.

Lots of potential there with some work! Oh yes, and $$$$$!

You need some furniture in there, to start putting some function to the space. Do the living room first. Live with the kitchen a while to see what works and what doesn't work, before you go changing it.

What is your question for us? The place looks pretty good and clean. It needs window treatments, area rugs, art and more furniture. Come up with a color scheme you can use throughout the open plan areas.

interior designer and use spaces with definitions from furnishings/art/ color/texture/ etc. . In a way there is a great potential. I think I'd enlist help and you should feel this is a blank slate I dont see that much that has to be undone or corrected. It just needs a pro to work with you. Figure out a budget.

I would move the tv out of the window and place it on the long wall next to the sliders. Float a sofa opposite the tv. This arrangement would make more sense.

From you photographs, it looks like one big living space, with that very odd dining room stuck in the middle, with the corners cut off. I don't think there is going to be a good way to use the space with that odd room there. How about removing those walls (you may need some beams for support if the walls are gone -- check w/ an engineer), and then you'll have a very open space. Then treat it like a big loft -- you don't need walls, it's all about defining the areas using rugs and furniture. It could be very cool!

To add to my previous comment: you could maybe keep the one wall of the dining room that faces the entryway, and defines that area. You didn't include a photo of that area, but it is nice to have the entry separate from the rest of the space.

I know it is intimidating, but move your furniture in and use the rooms more or less as designated while you analyze the home, its flow and see what functions well for you and what you hate about it. In the meantime, there will probably be expenses you weren't aware of and you'll have to save up for a remodeling budget. HVAC, plumbing, etc. can fail in a "new to you" home, so take your time at planning what can be done here. If you have any better floor plans, please post them.