Is "Them both" correct?

I'd like to know if it's ok to use a sentence as such: "Now you are them both"
It should mean that the "you" is both of the options.
For example: "There's two kinds of people in this world: those who are happy and those who are becoming old ...Now you are them both."

Is this correct way to say or should it be "Now you are both of them"?