Migrating to a dev domain!

Hi, I am sure this question has come before but I couldn't find an answer here or in FB. I have a WP website running an Amazon affiliate plugin and I want to migrate it to FreshStore but I don't want to take the website down for any extended period of time.

The Questions:

  • Can I pre-build the FreshStore in another domain or even a sub-domain and then migrate it?
  • Is the domain in more than one location?
  • In what db table is the store domain?