The 360 build that has more turns than Willow Springs

I have dealt with detonation before and it is very annoying. I do not want to do that again. I will likely use Cometic .075 or .086 gaskets to get back below 9.5 to 1.
We get 100 degree days here and are only about 400 feet above sea level. The best gasoline is rated at 91 octane and is “Up to 10% ethanol”.