One idea I'd like to throw out there if you're trying to add visual interest. We are adding a curved valance, just because I think it looks more finished with the crown molding that is in our kitchen. We also have light fixtures in the room- no cans. In order to "disguise" the 2 fixtures over the sink (so it doesn't look like an excess of fixtures in the room) yet not block the light, we are just using wood to "frame" the valance and placing decorative glass inside this frame. If you have ever visited a glass shop- the kind that stained glass artisans visit, and the bigger the store the better the choices-you will be blown away by the beautiful options. You do not need to do a stained glass mosaic for this idea, you can just put in a large single piece of your choice. I was just there today and I have yet to make a final decision. It's a simple way to do something a bit unique.

I'm not going to get into the conversation over height of pendant lights, but I will add that you should definitely mix metals. It's what gives kitchens visual interest, makes them look custom/new/modern, and keeps them from looking like builder grade. And that would be especially important to you because your kitchen is so white and could lean to the boring side if you're not careful. So in other words ... do not match your pendant lights to your faucet finish.

the crystal one is pottery barn, the others you can find all over. for some cost savings, try Lampsplusopenbox. great deals. https://www.lampsplusopenbox.com/chandeliers-category/island-usage/search.htm this one is nice too. 75watts for each bulb. that should be decent light for the island area they have this one too. not bad at $367. I've ordered a few from them. selections are limited and they change daily. otherwise, try regular LampsPlus, and here on Houzz or Wayfair. https://www.houzz.com/products/lunar-3-light-cascade-pendant-no-767-clear-glass-shades-prvw-vr~111334315

The TV above a fireplace, unless you're sitting pretty far back, has you tilting your neck UP to watch. This gets old / tiresome, fast. That may not be a great place to put your TV, despite the convenience of it. I much prefer the TV to sit on something so that it's at eye level when we sit to watch.