Good 21st venues in auckland city for 150 guest?

Hey guys i got 150 expected show up for me and my girlfriends 21st birthday party and need a good place to hold it in.. hoping for a nice open area not lots of little rooms where people are in different places, just 1 big open area where we can all dance together.... good DJ and Bouncers.... any suggestions will be greatly appriciated.. thnx