Can only recommend this way.
I'm running paperless-ng on my Synology NAS and I love it. I've additionally bought myself a Brother DS-640 scanner to get good scans also on the go and it works like a charm for the last few months.
Also because it's running on my NAS, it's automatically reachable via Tailscale from all my devices and gets encrypted + uploaded to Backblaze B2 once a week via HyperBackup. Setting all of this up took less than one hour.