Is the best way to install on an existing site in a subdirectory and then move to the root? If so, and many pages are built within the subdirectory, will that be difficult to move later? For example, pages such as:
domain.com/c5/subfolder1/subfolder2/pageone
move to:
domain.com/subfolder1/subfolder2/pageone

I initially wanted to install in the root to avoid having to do a move later but it doesn't look like that will work as the site's index page is being overtaken by C5. Plus, I wanted to build out as many pages as possible before launching and again, that won't be possible in the root directory as those pages already exist.

Edited to add: This is a one-click install of C5 which works very nicely but will moving it be an issue?