Shader scaling question

Hi all,

I'm removing my old water shader and adding a new toon water shader mesh. The plane will take up the entire city area in my game. I just need one plane and am expanding it to a very large size.

How can I expand this plane, while still keeping the scale at 1,1,1 so that the plane doesn't look like one giant single section of a plane, but keep its 1,1,1 look of an entire ocean?

Any help is appreciated.