create two triggers, one which has a "set future status" action set to live, the other with a "set future status" action of under construction. Make the "offset for the above fields" 6 days for the trigger that will be setting to live, and one day for the trigger that will be setting to under construction. Make "status changed" the triggering event for both triggers, and add an asset status "under construction" condition to the trigger that will be setting the thing live, and an asset status "live" condition to the other.
kick it all off at the correct time by adding a "set future status" to the asset manually.