With any snake, multiple hides are always a plus - especially while they're settling into their new home. Giving them options to feel concealed in both the warm and cool areas so they can thermoregulate without stress should speed up the acclimation process. I think anery are just as beautiful as adults but it's really all a matter of personal taste. Look up pictures of adult anery boas, and other morphs, to find out what you'd prefer.