It´s not very easy to get a job lined up, specially not on a jet if you´re lowhoured.
I think the best shout you have is to take the rating, and hopefully afterwards you´re at the right place at the right time.
Having said that I´m not sure that buying a rating on the A320 is the best thing, but the choice is up to each one to make.
I have done it and landed a job before I was finnished but I was a bit lucky I guess. I also had some hours behind me wich probably helped.