We have Caesarstone in Misty Carrera on our island. It has a slight warm gray hue, which works well in our kitchen, and it's very durable against us and our kids.

Rather than removing the edging, I would add to its width and this wil make the cabinetry look custom and paint it white. I would also keep the corner shelving and replace your accessories - one item/shelf and related to each other. You could add a great fixture instead of the pot light, change the faucet and hardware. Suggest carrarra marble backsplash (don't put the rack back up behind stove) and there are so many pattern choices. It's also interesting how they have laid the tile in the last picture, which I think would work really well with your set up and will save a bit of money on marble. A dark quartz or granite would be complimentary and warm up all of the white. [houzz=]; [houzz=https://www.houzz.com/photos/6-via-aragon-san-antonio-parade-of-homes-contemporary-kitchen-austin-phvw-vp~1042542];[[houzz=]

If you mean a seam? Maximum length they can make a piece without a seam is determined by the length of the slab available.

So would something like this be ideal?