My Mac is 1.2m at 2 years old and was sired from a female that was pretty much the full 1.5m. She weighs in at just under 500g at the moment. She is a great snake and I think they are pretty well bullet proof.
Anterasia bites barely break your skin and when you wipe the few drops of blood away you are hard pressed seeing where they bit you. But biting is part of the hobby, in all likelihood you will get tagged eventually.