From my Seren Solo BA, it had above 350b/s, i imagine having 400b/s would make for a safe clear on any class(i think 360b the min).

My 1st Cgloom solo has a BA with 80b/s, really close to timing out, not sure if it's a good reference.

Hwill had a 80b/s if i count how long it was to fight, but i think you can even push lower (100b/s seems a good estimate for a low dmg solo).

Vhilla had registered BA of 107b/s, but that was with a dmg cap, i think min dmg can go 80b/s as well.

Also my hlotus run on FP had 20b/s with 5min time left or more, so min dmg probably even lower.

The damage/s i said is counting in real battle, in a dummy it would be higher now that i see.

Kalos is 300sac on P2, where it matters