These cookies do not store that well, so if you need to keep them longer than a couple of days, store them in the freezer and remove them as needed. If you bake the cookies a little less, you will have a soft cookie, bake them longer and you will have a chewy cookie. There really is no need to add flour to these cookies they will still turn out fine but by adding the flour it prevents the cookies from spreading leaving you with a more uniform cookie. When done these cookies should have a light golden color.
You may completely omit the flour if you so choose.