Well, that was a nice exercise.
Late night I was almost done, but the pc got a bit slow, so I saved everything and restarted my pc.
When I tried to reload the project I got an error saying the file was corrupt and it would not load.
There was no backup to restore it and now I have to start over again.
But this time it will go a lot faster because now I know what to do.
And ofcourse I will have to make backups or see if I can enable autobackup.