If you're on a final revision, you're golden. Ethanol keeps temps down. Monitoring is really just for fun. Because in real life, if your engine is gonna go, it'll probably happen faster than before you can let off. I think the most helpful thing, especially with ethanol is monitoring OAR. Other fun things are boost, coolant or oil, 2 worst cylinders (typically 1 and 3), AFR... As for danger territory, I'd direct that question to Adam. Generally, you don't want to see persistent -2 to -3 corrections or high 13s on ethanol at WOT. I cannot stress enough that you need to speak with Adam on the "danger zone." He is the one that knows what he's targeting on your car, so he's the one with the most applicable answers.