I wasn't sure about black chairs with a white table but the Faith chair with the woven seat is very attractive.

I also like the idea of a blue rug to contrast with the brown. Bring the same blue in throw pillows into the adjoining Family room pictured, so as to tie the two spaces together.

You will have a nice bright feeling in the kitchen.

There is a lot of pink in the floor, which you can't ignore. This rug might work...West Elm because it just hints at the pink tone.

Dining chairs and table from Crate and Barrel.

I think your selections would work but have you tried one of those apps to see how they look in your space? Also, I didn’t see a blue rug selection. Have you chosen one yet or are you looking for ideas for that one?

Here’s a blue rug that would look nice with the oak table you picked out. Very simple solid color with a brown stripe that might pick up the brown in the kitchen. Not sure if blue enough.

https://www.luluandgeorgia.com/products/rory-rug