First my apologies for creating a thread which may already exist, but I'm a bit overwhelmed by all the options I have. What I basically want is that only my user files (Like Photoshop projects and music) , Developer stuff (XCode, XCode related stuff and my current projects) in /Developer and applications + application data (like preferences, browser history and my Safari Top Sites) will be there on my Lion clean install. I have both a Time Machine backup and a CCC clone on an external HD. So what is the best thing to do? Do a clean install and then copy my files and application support folders (for all the application data) and the Developer folder from my external HD to my internal HD? Or would there occur problems if I would do that? Or can I get the job done with migration assistant? I hope I'm clear enough and someone here can give me a straightforward answer to my question(s).