Hello @pyntolimited,
Thanks for asking.
You can display full post by turning on Full Post Content On Index under Pro > Theme Options > Blog > Content.
Here is a screencast that you can take a look.
To display post list along with excerpt, please follow the solution mentioned in following article. It will require changes in theme files. In that regards, please install and setup child theme before making any changes.
Download Child theme from following source: https://theme.co/apex/child-themes
Please take a look at following article to setup child theme:
Please note that providing support for custom codes (like CSS nad PHP changes) falls outside the scope of support we can offer. In case of any issues with the layout because of custom codes we won’t be able to provide support.
Thanks.