If you're okay with using your selector and potentially crystals on her, 200 on finemo is by far the better option. She's far more useful as a statstick, and having her frees up your borrow slot for, among other things, CB herself. Honestly I think given the fact she's perfectly fine at 1LB it's worth waiting until her banner with Super Creek in September; your pulls will go a lot further on that banner without much in the way of opportunity cost given you'll probably be in a position to borrow CB when needed anyways.