Buy more books, or share more books with friends etc. Decluttering and digitisation is good; you've clearly thought about the issues, unlike many who seem to have an entirely uncritical acceptance of "digital everything is amazing and better and there is no downside whatsoever". Apart from all that, though, there's more recoverable audio information on a piece of vinyl than on a CD, due to sample rates 🙂 Records, however, are a right arse to lug to DJing gigs.