One thing to know now, not later
At Week 4 you choose how your spot gets made.
By then you're holding a complete, executable ad: strategy, concept, script, drawn storyboard, and a production plan costed three ways. It's yours, and you can hand it to anyone you like. One of the options is us, and there's a deal attached. We'll get to it then.
All six sessions are for everybody either way.