Stella Sora Firenze character design

Honestly not a huge fan of this new character design for Stella Sora. She's dark element apparently (which is the first character we got of that element aside from the standard characters). I wonder if I should skip and wait for the next limited character instead, rolls aren't that plentiful in the game and considering I'm F2P i need to evaluate properly which character to get.
I could technically get her failing the guarantee and then getting the next unit for few rolls, but that's kind of a gamble...