In reply to EarlyBird:
Aspiring would be a great thing to climb although 2 - 3 days is a pretty short window for that - normally a guided Aspiring ascent is a 5 day trip to allow for some weather plus getting in and out. Still, if you had a good forecast and didn't mind flying both ways (helicopter) then it's do-able. Brewster can be a bit easier to arrange around the weather although there's a river crossing right at the start / end so that can be a problem if it has just rained. The other objective that springs to mind if you're in QT is the Double Cone - Single Cone traverse in the Remarkables. It's just a one day mission but is lots of fun in a spectacular spot and more technical than many NZ mountains.
Adventure Consultants are only operating their overseas expeditions now so you'll need to try an alternative guiding company. Again, since you're in QT you could try Mike Madden at Queenstown Mountain Guides. Alternatively there are a few options in Wanaka - Tim at Wanaka Mountain Guides or Thomas at Summit Explorers or Gavin at First Light. (I should say that they're all friends / erstwhile employers of mine so this isn't an unbiased list.) Aspiring Guides is another option and there are probably others. Like many industries, NZ guiding has found recruitment tough in recent years so guides are busy and it'd be worth getting in touch with them sooner rather than later. (That's not the "hard sell" btw - it's true!)
Feel free to drop me an email if you want any other information.