Hi Z,
Welcome,
Happy to see you got the 8" over the 6" you will not be disappointed, its a good size to start you off.
You have the basics with the package but another necessary item you will need is a tool to collimate to scope, there are several types of varying quality.
Check this site or others web reviews, recommendations and utube on how the use them. These scopes need the mirrors collimated fairly regularly to keep them aligned otherwise it will not preform at it's best, a little tricky at first.
The quality and price of them varies quite a bit. Check out Bintel for one, there are others here in Aus. that supply these an lots of other gear, again check the Web. No doubt there will be someone in NZ that sells astro gear.
https://www.bintel.com.au/product-ca...v=322b26af01d5
Good luck and enjoy.
Steve