Just want to point out that SMN is arguably the best DPS for A1S. The mobility and constant multidotting really shines on that fight. Even without a NIN/BRD/AST I was sitting at around 1180+.

Melees have it the hardest on that fight in my opinion. Between having to dodge puddles, taking one add, dodging AOEs, it seems rough. BLM probably as well, still haven't tested it there.