You didn't state whether you used a Mac or Lin/Win type pc.
I'm a firm believer in rip once, transcode often. If you only have to touch your cds once, then they can be put away in an environment for long term storage. I realize this is the AAC forum so my suggestions below are just what I've found to be best practices in my case.
If using a PC, what I would (IMO), would be to rip the entire library to Flac (No DRM, Many different libraries on different platforms, etc.) and then use a transcoding library to move your tunes to the iPod.
I don't want to start any kind of religious codec wars, but Flac seems to be the best starting point for archiving a library that I've found. And Using Foobar2000 to transcode my flac libraries to mp3, ogg, aac, and others has been trivial. So far I've processed 886 CDs this way, and have no complaints.
If your interested, you can take a look at my
v0.0.1 EAC Guide that I've just started.
Best of luck,
Cal.