Hi there, I think it's a great idea to introduce some feature lighting here. The chairs are making quite a statement against all the white and it would be lovely to balance that a little with lighting. As you have a lot of white and also rectilinear shapes, I'd lean towards organic shapes and materials for your lights. You could consider having more than one pendant light and create either a cluster, a row of 3, or else a long light. Here's some ideas.

Like the previous comments it depends on use and the design of the light fitting itself. Also if the light has a narrow beam it may need to sit higher to throw a wider beam to light up the area you need lit up. Generally you would put it above eye level so that it doesn't obscure your view when standing. More often than not it is just a matter of where you think it looks best, most pendant lights have good adjustment so before its installed have the electrician hold it up for you at different heights and see what looks best.

Carol, what did you decide on? I'm having the same dilemma now and am curious about what you went with. My table is 2100 x 1040 and the two lights I'm considering are 600mm or 800mm in diameter, and very minimalistic. Ceiling height 2.7mts. Would love to hear what you went with and whether you're happy with your decision.

This configuration can look quite effective, hung at different heights and different pendant shapes..... good luck with your decision!