I mean is there a way to bulk edit or set the default template, so I don’t need to Disable Elements, Sidebar Layout, Footer Widget settings, without having to do it on each post one by one.
http://www.philippineslegalforms.com/
I assume you are currently using disable elements for site header and top bar on that page already since I don’t see them?
Top bar should be disabled automatically if no widgets are added. Site header can be removed using this CSS: