The two cascades in from the new entrance can take a fair amount of water; if you've got less experienced folk it's perhaps worth planning to rig these with tackle, as pitches. (I seem to remember at least one of them requires a long belay to a rock bridge or a flake, high in the passage.)
The above isn't intended to mean "yes it's safe" - the truth is I don't know. But I was down there last year a day or two after a wet spell and I was surprised by how much water was still going down the cascades, which makes me ponder on how wet they get during a rain event.