depends on your numbers...which itemlev does your dos have? etc.
take the numbers for a full crt muti, a 4cp crt env, 1 dos use with crt and calc the dps for each approach
my advice is to use a 5cp finisher for more dos dmg (2% more ap through sot)...personally I do the 4-5 finisher before the vanish then garrote, muti, 5cp finisher, dos during the vanish window (subterfuge)