Hi Kevin,
You can use Deployment Manager for SharePoint (http://www.quest.com/deployment-manager-for-sharepoint/) to duplicate your site (web parts and configuration,lists, pages, etc).
Since you use the SI web parts the migration is a bit easier. The systems and the catalogs are the same and the same data will be accessed and you just need to think about situations where you have custom actions (like GoToURL) to redirect users or menus in case that you used absolute and not relative path.
If you still have questions or you need more help from Deployment Manager experts let me know and I can redirect your questions to them.
Also, we offer professional services that would help you with the migrations, configuration, etc.
Please let me know what do you think.
Thanks,