440 build, need advice with the little details

Thank you guys! Hopefully this setup will work well on the street, i am trying to keep compression where i can use 93 octane fuel and not build it too hot for the cast crank. I've read that the factory bottom end can survive 600hp, and while that would be awesome i don't want to push the limits because i don't plan on racing it much, if at all but i want that nasty loping idle and that heavenly sound a built 440 makes at higher rpm. Again, i appreciate everything I've learned from you all