I would avoid having lots of different types of wood in a space. If the sideboard and table images are what you have chosen, would you consider a black metal framed chair in same/similar design. Also just check the height of your table and the chairs. Some imported tables do not match the height of some chairs. Makes dining uncomfortable

I agree with everything Siobhan says. Too many different types of wood does not look cohesive at all. Dining tables are lower than they used to be. I had to choose the higher version of mine at 74cm. The chairs should be at least 45cm seat height for comfort. I also think its too woody. If you must have wooden chairs get painted ones so its not so obvious. Mine are black painted wood. I would chose a different material for the chair completely. Steel, upholstered, leather, rattan there are so many options.

Agree with not mixing different woods, or even different wood colours. Rooms always look more complete when they match. Show us the completed room when you have done this please.