Only experience i had with 'feisty' snakes was Allison the JCP but she never did mellow out and even after 6 months, i still ran a 50/50 chance of getting tagged just reaching in to change the water. Everyone else are more or less lazy slugs unless they want food or smell food lol. Even Pat the GTP is laid back and he's a biak.
And both boas look good. I was told that the BCOs tend to be a bit more feisty as babies and even some into adulthood.