First, remember that you can gain indulgences on Monday, November 2, All Souls Day and the days following.
Second, 5 November is a first Thursday. You can gain a plenary indulgence during this year for Priests. It is not commonly known that you can apply plenary indulgences to the souls of those in Purgatory
Third, would it not be a good idea in this Year for Priests, during the week after All Souls, for this 1st Thursday, to pray in a special way for the souls of deceased priests?
Tip O' the Hat to Fr. Z!