Hello, and thanks for the response!
I am already aware of how to modify Calendar templates, so all good there, though I am using the PRO version of the widget, so I believe that correct template to alter would be:
wp-content/plugins/events-calendar-pro/src/views/pro/widgets/list-widget.php
However, I am still unsure whether it is possible and if so, how to alter the View More link within the list-widget.php template once copied into the tribe-events folder so that it will jump to the first available event returned.