Thank you for your advice.
I have booked myself a telephone consultation taking place in a few days time so i will see what they think. I am thinking it may be easier to just pay a migration agent to sort everything out for me as i am going round in circles and getting nowhere!
My main concern is the salary, the job offer i have had does not hit the $53,000 target for the 457 visa, so another thing i need to know is, is there a way around it. For example being paid the target amount but then paying a hefty rent, or paying for use of facilities.