Too ambitious. You're analogy is like comparing apple to oranges. Mexico is a defacto state now, whether we want to admit it or not. Canada is working it's way towards the status of a third rate foreign welfare dependant nation also.
If we made it an actual state, it would get two Senators and 160 Congressmen. Wouldn't that be great? If it were divided into 10 (or so) states, it would get 20 (or so) Senators and 160 total Congressman.