NZ plan to move and work in future

Looking to gain some advice , I am at present looking at a Post grad option that could gain entry to work in NZ preferably South Island .
Could anyone give me advice on the most secure route - I have a 2:1 in psychology and looking at either postgrad in - Speech therapy, Occupational Therapy or educational / clinical / counselling  psychology .
Which post grad would be the best to choose in terms of entry to NZ ?
I should add I am 50 yrs old with a young family and business / marketing background.
The plan is gain entry before the cut off at 55 yrs. I know we are living in uncertain times re: COVID restrictions, I am looking at it from the perspective that the world returns to some normality.

I worked in the mental health industry, your chances are better than average. Because of Covid we are experiencing a shortage but you will have to take exams and some courses for qualification conversion.