I've just linked Zeus to my lightning node now and you do need to setup a funding channel before you can use it. The prices for LSPs vary with Zeus being the most expensive.
I have a link to some awesome lightning resources which I will link once I go to my PC.
https://primal.net/e/note1wxmf8cr3e0apqxt3rty96ufr3tmcs6j5ycjakk2cwfn6yvvw4yxq8hy739