Help with a complete restore

If you have Time Machine, after the fresh install I would recommend restoring your user file and settings only, which will also include other personal stuff like your email accounts, rules, etc. This would be the easiest way.

Without Time Machine, there is an archive and install option which will keep your old system in a separate folder called "Previous System" (easy to throw away after grabbing what's needed), otherwise it's like a fresh install.

Or by hand:

- for the iTunes playlist, I'd use either an iPod to sync music back after the fresh install (google for exact steps), otherwise I would backup the entire ~/Music/iTunes/ folder onto DVD or an external HD to restore after your fresh install.

- for bookmarks, in Safari go to File > Export bookmarks...

- passwords can be extracted from keychain, or just re-enter them one more time after the fresh install.

 

Why not just remove what you don't want? It can't be more work than an Erase and Install....can it? How much junk do you have?