What's your goal here? Are you going to listen to music now via your CD's or are you going to listen to music via a computer and music files on a computer? Are you copying CD's to have a backup while you continue to use the CD's, or are you copying the CD's to have computer files for daily use, while the original CD's are archived on a shelf?
The reason why I ask is that it seems to me, that the CD is the archive, and the computer files will be the active use files. As such, if you plan on keeping your CD's and not selling them, the copies can be lower quality compressed files like AAC, Mp3 or if you want WMV. Once you import and convert all your 1200 CD's you'll have easy access to all the songs, some 12 000 - 20 000 individual titles. You can back up the compressed files onto another hard drive. You'll always have the original CD's archived on a shelf somewhere to go back to if needed.