Not too worried about the first and second boss because between Flins, Ineffa, Aino & Columbina, I should be able to make two fairly strong teams. I am also pulling Zibai in second half so worst case scenario, I will just wait for her (for the first boss).

Third boss has got me worried though. I don't have Neuvillette nor Skirk to bruteforce it. I've heard mixed opinions about Mualani. Some people say she's good and other say she's not. Either way, I assume freeze will be better here than the classic vape for more consistent DMG. Especially since Sucrose is already taken by one of the Lunar teams anyway.
Non-Neuvi havers - who are you using against the crab in the upcoming Stygian?