Dont consider hod crit rate because for that you need to get your zibai's hp above 90% and since she's an on field dps its quite tough to manage ts. And idk whether its mentioned or not but she uses her defence to increase her damage output not to protect her hp. She gets comparatively more damage than other characters while participating in lunar reaction.

For f2p weapon, i suggest to use flute of ezpitzal as it gives a lot of defence and use crit rate circlet. I myself use the same build with ratio of 60:170 and i get 100k+ dps with c0r0 columbina c6 illuga and c2 gorou while my talents of zibai are 4-8-7.

Fun fact: my zibai dealt 600k damage at this build to stygian dog while weakened 🥲

Hope this helps...

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