Can I open my own channels? Or only can use the LSP?
You can! It's an option in the admin tools section.
That option allows you to open to any node on the network. In the "on chain swap" screen, the default is to open the channel yourself with the LSP.
Sweet, I poked around, but didn’t see it earlier. I have a smallish channel already with LSP, would like to open to my main node too which has a ton of liquidity.