After creating the zen iso on my own time without recording it we can now create a linux-lts iso together.

We create githubs for the iso and the Calamares config.

We build a new Calamares config for linux-lts.

We decide against putting packages on our system because of dependencies (broadcom-wl).

With the use of Meld the creation of a new linux-lts iso is under 20 minutes.

We decide to boot into Mate rather than Xfce4.

We build the iso and test it out in VirtualBox.