We are ready for public testing of our new site and want to make it accessible through a different domain name.  For instance, staff can get to the site via www.mysite.stg while we need testers to access the same site via www.mysite.test.  We have multiple sites under a single Umbraco install.

I can duplicate the entire site as another content node and assign a hostname of www.mysite.test (ugly to manage).

Or, I can modify any XSLT that uses NiceURL to use something else so I can modify the domain name used in links.

Or...  what other ways could I handle?