Need help understanding…

…how to setup the theme without a sidebar. In the demo theme I see…there isn’t an option in the customizer to set the page width/fullwidth/ without sidebars …I would like to buy the premium version but I need to know if this theme will suit my needs…also, does it work with most WP plugins and page builders like SiteOrigin, Visual Composer, etc…I have an extensive archive that has a lot of content pages which I need to link to the homepage…are there any limitations?
I hope you can supply me with the relevant info most designers would ask. BTW..I do love the clean look of the theme so I would need as much functionality as necessary.