Nobody "needs" itunes
Why not just get them a mac if they are "needs" apple software kind of person.
I take it your using ghost image as general word for taking a image, since "ghost" has not been a viable product for years and years. Last version 15 was released in what 2010.. And did they announce end of support back Apr/Mar 2013?
Is this a laptop? Most of them come with built in methods of factory reset, depending there are ways of using this built in system with an updated image of the OS.. So you can tweak it like you like, and then update the system image on the system so that they can just hit like a F key to restore it back to nice clean image.
But your overall plan is sound - if you have a user that your just always having to fix their machine taking an image of your base install for them is a great idea, then you can reimage it and give it back to them in a few minutes.
As to other things - if they are one of these users that just can not help but clicking on the shiny stuff that pops up.. Look to blocking those popups vs adblocker - have them user a browser that supports that like firefox for example. You would be amazed out how much less trouble they get into when they just don't see the BS that pops up to grab their attention. Other than that make sure they are only normal user, and lock down UAC so they don't even know the admin password to be able to change any system settings or install software.
What antivirus software are you using? Is it they just keep infecting it with crapware?