You're so lucky, and hopefully you feel shame and remorse. If you had been living in a lot of other countries you'd either still be behind bars or dead.
Abide by the conditions of your parole. Then you should spend the rest of your life making good of what you did. Find a way to communicate to Michael Choy's mother that you will tithe half of all of your earnings, for the rest of your life, to pay to compensate her and her family for what you did. You can keep enough to keep a roof over your head, food and clothe yourself. Paying half of what you earn to her and her family will be better value than paying a church. Meanwhile you should think about how you can help stop other kids committing the hienous crime you did.
oh and if you reoffend, you should expect a long long prison sentence. You'll have blown your chance. Mercy is the prerogative of Western judicial systems, be grateful for it, it is time to start making recompense for the life of a peaceful man that you helped destroy. If the rest of your life is spent compensating the victim's family and teaching and supporting kids to avoid a life of crime, then your early release will not have been in vain.
ADDENDUM: The NZ Herald reports he will have early release with an electronic tag and strict monitoring.