As you are designing the application for the iPad I thought it would be helpful to take a look at the some "IOS Human Interface Guidelines" from Apple.
1.-Minimize the Effort Required for User Input
"Inputting information takes time and attention, whether people tap controls or use the keyboard. If your
application requires a lot of user input before anything useful happens, that input slows people down and can
discourage them from using your app."
2.- De-emphasize Settings
"Avoid including settings in your application if you can. Users cannot open the Settings application without first closing
your application, and you don’t want to encourage this action. When you design your application to function the way most of your users expect, you decrease the need for
Lets say its not very recommended to build an app for iPad with a 5 step wizard. Let the users "play" first with your app with some default settings, and then if they want to change the options laters they can do it but not with a 5 step wizard...
A question, have you ever seen a 5 step wizard on any iPad app?