I think that serve call template is a game changer. I've done a few calls like this, but it's always been like, "Okay, what's next? What's next?" and I've never really had a script at all so I think, yeah, that'll definitely be a game changer.
The other thing I found really useful was some of the smaller things you talked about, like the meeting structure, how to structure these sessions. Once a week, 90 minutes, start with the weekly wins. Small things, but critical for good structure for the session.