Using HDD for storage of bitcoin blockchain with some caching sounded like a good idea, no need for expensive SSDs. But now I need to rescan 300000 blocks to start lnd in recovery mode, and it takes around 4 days, literally. Already tried neutrino (which means leeching off someone's node) and it didn't seem faster.

Perhaps lnd could be smarter and just use bitcoind's wallet for on-chain funds...