Somebody got to keep an eye on you to make sure you stay out of trouble!Lol Rick's sharp eyes will notice not all header bolts are installed.
I plugged in the new gasket info into the calculator, results below. I'm OK with a very similar DCR. But I do have a much closer deck clearance of .040", where yours is about .060". The highest octane gas I can purchase locally is 91, what about you?
How did you install the cam? In my simulations I have IVC = 69°.
The closer the spark plug to the center of the chamber the better, less time to a complete burn vs being compressed by the piston until it self combusts or detonation.
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If you are thinking that a cooler plug will help with detonation, then this is not going to work. The plug never gets to a temperature that will ignite the fuel/air mixture.Maybe overthinking it, but wondering if moving to a 44 (cooler) plug may be of benefit