Attempting the most jank razer surround sound setup

Basically through odd circumstances I own a leviathan, nommo chroma and nommo pro. I'm trying to make a 5.1 surround sound setup with nommo pros as left right and sub, leviathan as centre and nommo chromas as rear left and right. I've ordered an external 5.1 sound card with optical in so I can use with myT as that's what I'm doing it for