Hi Boomtobust,
As you know from other threads I am in a similar position.
I would recommend that before the meeting you go through all of your income and outgoings in detail and have a folder with you with all of your numbers in it (don't necessarily show him this folder). Look up SFS online and that will give you all the headings you need to look at (petrol, food, insurance, etc) and try to have your finances broken down into those categories and into monthly amounts. Try to make sure you don't forget any annual expenses - maybe look back over a year's bank statements.
You say you don't see an improvement in your personal circumstances soon, but the bank manager will want to be able to put down that there could be an improvement further down the line (maybe one of you will have better prospects in a couple of years). He should be impressed if you can tell him you are retraining or something to improve your prospects.
From our meeting, they are happier to try and get some MARP arrangement together if they think you are intending to try and stay put longterm - if you suggest that Australia is on the cards in the near future they will want to move you sooner rather than later whereas if you can say you are closer to getting a job then they will try to work with you.
Also, ring MABS before the meeting to ensure that you are claiming everything you should be and not overspending in some area - our bank manager said they have to tell everyone to call MABS but in our case there was no fat to cut.
HTH