Moving kitchen into dining room
Thoughts, in no particular order:

Where's the water heater? The longer the pipe run between it and the kitchen, the longer you'll be waiting for hot water. There are instant hot water devices if this is an issue.

The oven will presumably need either an electrical or gas connection.

You're putting the dining table directly under the toilet. How's the sound insulation?

Is the wall you'd be knocking down load-bearing?