Regarding (3), with LNC the Mailbox server can see your IP address.
Have you seen guides about running LND in Hybrid mode behind a VPS? https://github.com/TrezorHannes/Dual-LND-Hybrid-VPS
Iβd echo what nostr:npub1lxktpvp5cnq3wl5ctu2x88e30mc0ahh8v47qvzc5dmneqqjrzlkqpm5xlc asked β which is the private note? Itβs not clear in your note. I assume is the node with just one channel?