So i played around a bit with CH CD x drink, and it seems you can get pretty crazy damage off it in the corner starting with 2 drive and 1 bar. The best i could find was:
CH st.CD x drink, dp.B DC qcb.D, qcb.D(2 hit), qcb.D(3 hit), qcb.B, qcb.B, qcf.A, dp.B DC qcb.D, qcb.D(2 hit, gotta delay this one a bit), qcb.D(3 hit), qcb.B, qcb.B, qcf.A, qcf qcf.BC for around 891. You end up with a bit of meter, and 1-2 hits away from another drive bar.
If you end it with dp.B instead of super, it does 110 stun, so as long as you have got a few hits in beforehand, it should be a guaranteed kill. I think you MIGHT be able to do 120 stun if you do 2 reps of dp.B DC qcb.D, qcb.D(3 hit), qcb.Bx4. But that is too hard to be practical IMO unless there is some sort of secret timing trick that i do not know about ^^
EDIT: lindseyboi yeah that is correct. I just do f, n, d, df, f, uf+B