I will say I think I misspoke, and the CDs in the collection are actually the SE (technically I don’t think the original ESB program was ever released on CD).
Regardless, saying you have no interest in the official digital release because its digital is silly if you’re asking someone to give you digital files anyway.
Ultimately, like I said, it’s up to you, but it is piracy. If they release the OOT officially are you going to download that illegally too? Same logic.
As for the missing cues, there’s only two - Lapti Nek and the Ewok Celebration - but as far as I know neither are the film versions. If you’re interested in the film versions, there are score fan edits out there that try to preserve that.