I usually use 3 tablespoons of dough per cookies so you get those big fluffy store bought like cookies. (motherthyme.com)
Make sure to use exactly one tablespoon of crust dough per cookie. (catchingseeds.com)
I'd probably recommend making the cookies a little smaller for shipping purposes, maybe 1.5 - 2 tablespoons of dough per cookie and reducing the baking time to about 8 - 10 minutes. (justsotasty.com)