The QGIS_setup.bat should check if QGIS is installed, if needed it installs it, checks if a public profile is available, if needed it downloads it from the ftp and then runs qgis with public profile.

For more data to add to your QGIS project check out the Metadata Portal of Landmælingar Íslands --> https://gatt.lmi.is/geonetwork/srv/eng/catalog.search#/home

Thanks to Landmælingar Ísland for the setup.