That's good news, if you can fit into this category.
It doesn't take you direct to Residence, of course, but gives you a good step on the way there if you can make your business work.
The only thing I know of about required money is this, regarding the LTBV.
http://www.immigration.govt.nz/NR/rd.../0/INZ1059.pdf
K3 Maintenance funds
You must provide evidence that you have, in addition to investment capital, sufficient funds for
your maintenance and accommodation and that of any spouse or partner and/or dependent
children who are applying for temporary visas to accompany you to New Zealand.
Note that you and any accompanying family members must not apply for and be granted welfare
assistance under the Social Security Act 1964 while in New Zealand during the currency of your
temporary visas.