There have been a few JC pilots jump across to Pac Blue recently, due to a perceived 'better future'. Although from what I hear, they may miss the overtime rates.
In any case, 737 type rating courses are almost impossible to come by in Aus at the moment because of the huge movement at Virgin Blue, Hong Kong Express, and now Qantas restarting their own recruitment. Although I'd imagine JC would be better able to arrange an in-house solution.
Either way, it's a great time to be in the pool.
horserun, I wouldn't be suprised at all if you pick something up with those numbers, good luck.