I agree with @Rat Bastid that you are very close. I would like to see the fuel ring and a limited idle wot pull on new plugs before making any final judgment, but if it were mine, (and I run NGK plugs), I wouldn’t pull a couple of degrees. I’d pull one degree of timing because it’s a street car, race car I wouldn’t and I’d watch em more closely. And I’d go one step colder because I see color pretty far down the threads. But that’s a good looking plug for a carbureted street car.
