I’d like to chime in here…for the purposes of the information I see here, you can clear it with a 330 weapon or even a 320. I went in as AST with my 320 weapon with a clear party and we did it just fine. If you’re going in on WHM, it won’t matter if you have 320 or 345…it is still a very healer intensive fight for us with all the mechanics going out at once. You just have to make sure to essentially use all of your cooldowns as appropriate…with O3S, the mechanics are going to wipe a party more often than a lack of heals.