Yes I wrote a guide about that scenario here and indeed I didn't talk too much about 0-conf channels, just briefly mention them. https://darthcoin.substack.com/p/dunder-lsp-and-lightning-box-provider and here https://darthcoin.substack.com/p/bitcoin-private-banks-over-lightning
But I don't know what OP want to do, so not sure if these scenarios are good for him.