You have no hope. Face the facts: you are keen, work hard and want to own your own property but will never be able to in Auckland.
Here's my suggestion. Give up now. If you are over wasting half of your life and that of the planet sitting in a car on the way to and from the house that you can not afford - give up! Give up and come north.
If the Government or the PPTA think the answer to teacher shortages in Auckland is giving an allowance to further subsidise the unrestrained madness that is the Auckland property market, there will be a revolution among teachers living in very low socio-economic communities in the regions.
Many of these teachers (and I have been one for the past two years) spend more than $100 a week on petrol.
They also spend disproportionately more on rental because, to live in what would elsewhere be considered adequate housing, they have to rent holiday houses that are normally not rented out at all.