What a gorgeous boy! How are these guys as feeders? I've peaked at a few of the boa species but don't know much about Dumerils.
Mine is a typical ready to bash his face into the door for any movement feeder, he does however prefer only rats. I offer a variety and he's not interested in anything else. I've heard some can be hard to get started but never had an issue even with him going into a larger cage immediately.