Yeah, it'll be cool. Haha, geddit? Anyway, just make sure your drive is mounted before opening iTunes each time or it'll revert back to your internal drive and things'll get a little confusing for you. To open different music libraries from within iTunes, hold OPTION when you start the app up. This should help you when it comes time to transfer the library or if you have ever accidentally reverted back to the internal drive. 🙂