A fair question TAC inop! As you said, there is little information about on the reality of life at SAW and particularly the state of their finances. We all know the price of jet fuel is at historically high levels and may remain so for the forseeable future. SAW are operating new or near new ERJ170/190 equipment and propose to operate 2 used EMB 145's. The unit costs on the smaller jets are particularly high, which is why the 50 seat jets are being replaced with the 70 to 90 seaters by northern hemisphere airlines.
In order to succeed in Australia SAW requires a large and essential cash cushion as they are competing (in the resources sector) for crew change work against operators with significantly lower costs (courtesy of the F100).
If you can find the money trail and satisfy yourself that SAW has the cash to remain viable in the ad hoc charter market then go for it! Otherwise, there are still a lot of other jobs around!!