Big Mike, Mr Selfish is right. The BK is a bigger machine and requires a minimum of 10 hours for the isue of a type rating.
I could be wrong... it does happen from time to time. I am fairly sure though that only the A109 and the AS355 fit the 5 hour type rating.
Theres one or two A109 in VIC... I would have thought the hourly rate was closer to $3000 than $2500... look on the web. Theres another one or two others around Auz, QLD for one. PM me or Selfish if you want the inside on that one.
Try ringing Ray at Kestrel, hes just redone his ME-IFR testing priveledges and he may have an idea or two as to a suitable machine.
good luck with it