Bab never has any effect on your IL. Every non-main-initiator class grants 1/2 IL.
Re-fixed the stances.
... which really makes doing Septette for the Dead painful.
Why?
Vampire 1/Eternal Royal X: Learn 3rd stance at 6th ECL, 6th at 12th ECL, 8th at 16th ECL, just one level behind a normal ER.
Vampire 2/Eternal Royal X-1:Learn 3rd stance at 7th ECL, 6th at 13th ECL, 8th at 18th ECL, two levels behind a normal ER. Not too shabby.
And then you are a vampire. Aka minions and undead immunities and boosting your ability scores.
Or don't be a vampire and take the feats which allow you to have Blood Charges to power up Septtete for the Dead stuff.