Just winning the B3 alone will cement Sid in aussie BB folklore and catapult him to being one of the top tier managers in the world let alone in Australia. It is something quite special.
League and Cup titles will just be icing, but will make it extra special. If he is indeed going for the B3, he may a s well go for all 3 since B3 is so taxing financially. Kill two birds with one stone so to speak.