@bencat: The current image should now also work for the 8GB Pi (even if the „8GB“ is not yet displayed in the web interface). So you are very welcome to test the image with it. If you should still run into compatibility problems that we have not yet discovered, please let us know and we will solve them.
@rod: The Squeezelite autostart timer should be as long on the Pi 4 as it is on the Pi 3. Maybe we changed that though because of another problem with the Pi 4. I’ll ask our developer about this.