Anyone want to evaluate my team for 3BP?

I've only tried 3BP once, and I made it to the last turn before I wiped. I had a pretty bad 2-fer early on and had to struggle to get that far.

But this is what I'm working with. If anyone has any thoughts, I'm all ears:

80 Santa Alter 4/1/4 NP5 Ushi (mainly because it's Caster day)
80 Saber Alter 6/2/7 NP1 Ushi (primary damage dealer)
(Support Waver preferred for Salter's NP gauge)
65 Hans 8/10/4 NP5+Interlude Carp
60 Mashu 10/10/10 Carp
80 Cu 8/8/8 NP5 Carp
MC is plugsuit level 3

I know getting Cu's evade to 10 would be a big help, but farming the feathers seems a bit long-winded in the middle of the event. I still need 10 to get it to 9.

Basic strat is just blast her to hell with my Salters (with Santa having a half-decent heal to keep Waver or Salter alive) and take out the hands early, then stall stall stall.

My plugsuit didn't really...DO much. Didn't have much chance to swap anyone in. I'm thinking Atlas or Chaldea might be better for sustain.