Hey Christoph, That is exactly what I would do with this deployment. Although you have a few more interesting options if you go off the script. Keep in mind that this lazy deployment is supposed to help anyone with minimal experience dealing with this applications to put their servers up.
If you require servers with SSL certifictes from a diferent CA, you may want to modify the docker-compose.yaml file. The minimal change you would have to do so your SSL certificates are not overwritten is to remove certbot. Commnt the lines 29 to 36 https://github.com/jfederico/scalelite-run/blob/master/docker-compose.yml#L29