I used a LLB4 Bonney that was lvl 130 with 75% passive INT buff and a 80% Sanji hex buff (with Nami). So a 95% with a normal 60% Sanji hex buff will work. If your FC Bonney isn't at least LLB3, you'll need more a bit more passive stats. I assume 100% passive with Sanji hex will work for LLB3 lvl 120 Bonney.
If you use a non-LLB5 Bonney, I believe you'll need somewhere around 100% passive INT stat boost to go alongside a 60% Sanji hex buff. I tried using a LLB3 Bonney, except only lvl 99, and barely failed the first kill of stage 5 with a passive 63% and an 80% from a Sanji hex
I used a LLB4 Bonney that was lvl 130 with 75% passive INT buff and a 80% Sanji hex buff (with Nami). So a 95% with a normal 60% Sanji hex buff will work. If your FC Bonney isn't at least LLB3, you'll need more a bit more passive stats. I assume 100% passive with Sanji hex will work for LLB3 lvl 120 Bonney.
If you use a non-LLB5 Bonney, I believe you'll need somewhere around 100% passive INT stat boost to go alongside a 60% Sanji hex buff. I tried using a LLB3 Bonney, except only lvl 99, and barely failed the first kill of stage 5 with a passive 63% and an 80% from a Sanji hex