8 – How to display a node edit form in custom URL

I have a node created (using Default content) as part of the site install and it is available to edit at node/(nid)/edit. However, this node holds some of the site-specific content (for example, content to display on sitewide banner) and should be available under the site configuration section instead of node/(nid)/edit so that I can restrict the edit access with specific permission.

Why not the configuration/settings form? Because the node type has rich fields like image upload, entity reference, etc, and would be nice to use the node/entity’s field API and display modes.

Is there a way to get the edit page of just this node at /admin/config/system/banner-settings?