Your CECHL will work yes you only need Syscon. You can check out Rip Felix live streams to see how it's done. You still need the tbfreqfix for 3.8GHz only and I don't know where it's at tho
But be advised that it is NOT publicly RELEASED and nobody can really help you if you mess something up.
Do it fully at your OWN risk.
I'd rather wait till all doubts and questions are resolved on the release date