The 30 second Shut Down interval in SparkyKDE can be altered by changing the following lines -
property real timeout: 30 at /usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/logout/Logout.qml
property real timeout: 30 at /usr/share/plasma/look-and-feel/org.sparky.desktop/contents/components/LogoutOptions.qml
I've changed the 30 to 120 .....listen to pmrp as you go out the door with enough light from the monitors before the pc shuts down!