Hi Crossbones

I'm also following this with interest, but I have a different engine (4BD1T).
I already have EGT probes and thermocouple readers. Do you know if the glow plugs are close in performance to a J or K type thermocouple?

Also how do you recognise a dangerzone with a cylinder head temp probe? It is as easy as a max temp like with EGT's?