Based on your instructions and analyzing the rock the cabinet 2017 mod I manage to do it!
Not the same way you did but anyway.
The only problem I still working on is the tech tree.
I tried to set commander level to 15 in order to unlock everything but it doesn't work.
I also tried manually allow and research some upgrades (like banshee airstrike) via trigger but the map just ignores it.
Any thoughts about it?