Honetly I don't know. I don't use much grain at all because I've only been doing this for a under a year and only handle enough grains for a steep.
Your plan sounds good to me though.
I bet some of the AG guys would know though, I suspect they'd say if it's not fuzzy and/or bitter it's fine.
But again, I know not of what I speak, besides Ergot is a fungus that infects rye, and can cause hallucinations.