Adobe Acrobat Pro Standalone Installer

I need to install Acrobat Pro on a network that will never touch the internet. I understand I need to build a FRL package from the Admin Console, however every package I build still goes to prompt me for a sign in/license after install. I thought I needed a challenge key from the stand alone installer package and that would let me activate it, but at no point am I asked for a challenge key. Is there a step by step guide for creating an offline package with the license/challenge key built into the installer package?