If i were u, i will choose five days. This is because i want my kid to learn self-discipline and also hope that he can take care himself soon. I think five days training is better.
Sorry, one thing u need to consider too. That is "is there a confirmed seat for K1 in Victoria?" If u think it is important, then it is better to choose Vic...
My girl got 5 days am offer and Vic 2 days pm, I choose Vic. I really love the environment and teaching method of Vic. I think some children even not attend n1, so I accepted the 2 days class (of course not the 1st priority and even the pm class is not a good time slot for my child). Just hope my girl will enjoy her school life.
If like this, i will choose Vic cause have a backup K. When u apply k in the coming year, u and your kid will have less pressure. I think less pressure will have better performance in interview.