I have a female that is just over 4ft and weighs 13 pounds. She is captive born/breed and is a big puppy dog. She is the sweetest snake I own and she has become my favorite to handle. The most she will ever do is let out a little hiss but has never shown any aggression or defensiveness. She is a big baby that will just hang out with you as long as you let her.
Like mentioned each animal is different and I have heard of bloods that are not a nice to handle, but that can be said about any snake. Just be sure you are ready for their size. Even though they don't usually get real long it's the heavy body and weight that you have to be ready for. They get big and heavy and will require at least a 4ft cage when adult size and in some cases larger. Kingsnake has a female (or had) that weighed 38 pounds.