Do all 10 chairs need to be at table all the time or can it be 8 chairs and 2 you bring over from somewhere else for large sit downs? DIAL UP YOUR CHAIR sizes to be proportional to table so, as to not look like child size chairs. Restoration Hardware furniture is over sized and generous proportions compared to many other retail sellers. Just any chair could be easily dwarfed by the RH table and look tiny. Here are a couple of my favorite modern chair makers KNOLL Brno flat bar chair which can be bought at auction and recovered in leather or vinyl of your choice and David Edward Furniture made for corporate, resort and colleges and available through dealers, I am showing here as a "host chair". Other "host" chair items possible of course. I just like this one.

here is one that might work I dont think all timbers need to match exactly and that some contrast can actually help (*not just colours that are close)

You can put a pendant in the existing socket then move it over with a long cord to place it over the dining table. This is quite common. You can use surface mounted downlights as well.

They all look good, but it all comes down to clearance. How low is your ceiling? How tall is your tallest visitor? How long is the light fitting? Will the light fitting look good if it is close to the ceiling, or will it look cramped and foreshortened? When I moved into my current home (with a taller ceiling than yours), I got an electrician to hang a row of pendants down the length of the hallway so they would be 5 cm taller than my family's Uncle Colin (who was by far the tallest regular visitor). Now twelve years later, Uncle Colin has passed, and my little boy (who was six years old when the pendants were hung) has grown to be 192 centimetres (6'6") and needs to duck everytime he goes to his bedroom. I need to get my electrician back to make all of the pendants shorter, but the proportion of cable length to shade won't be as nice. Best of luck, Dr Retro of Dr Retro House Calls