I still use iTunes as a library manager. I rip to AIFF uncompressed for compatibility using XLD, a free program. The great thing (one of many great things) about Roon is that it reads your iTunes library without modifying it.
If you can, get a Roon trial going on your Mini. Then by reading the forum and using your own experience and hearing, decide where you want your music files.
Ripping SACDs will require special equipment and know how. Good luck with that.