Hey Timothy,
this hasn’t been envisaged initially, yet is possible via certain theme customizations; since they’re not that large-scale, I’ve prepared the files for you: please download this archive, unzip it, and upload the resulting files into the main theme folder (/wp-content/themes/Kanso/), rewriting the existing files. This should make the “full-width” layout the default one, i.e. if no layout is chosen, the project will have full-width layout; please note that this will affect all existing projects as well! Let me know if it works – otherwise we’ll need to look at other files.
Sincerely,
Andrii / Satori Studio