Dont get a caimen, even a swarf, you wont be prepared to care for it properly after a year or two and zoo's wont even take them anymore.
Sorry - no matter how sure you think you are, you wont be able to care for it properly.
I hear that, small as they are, they are devilishly nasty. There's a guy who posted a year long thread here about his caiman build. It's thorough, and details all the work required to house one of these little monsters. There are only a few clips of Little Claudia being aggressive and hateful, but they'll put the fear and respect into ya. Even their neck plates can cut you up when you hold them.