The job market is terrible all over the world right now, a cadetship with ongoing employment is worth considering, but 500 hours alone?? No way it's not enough in all honesty 3000 hours is the new 1500 hours
One positive you could take from line training is a much better understanding of what daily life is like as an airline pilot (and trust me it's not what you think it will be like) and a much better understanding of the A320
Another point to consider is if there is a hiring boom in the near future the 500 hours would put you in good stead, but don't expect to be owed an airline job just for completing the line training.
I personally think type ratings on unusual aircrafts give you a better chance of employment as everyone has a 737 or A320 rating, I'm talking 747 classic, 767, MD11 they are all available at pan am for around 10k
Not saying this will get you in but for 1000 A320 applications you properly have 10 747 classic applications.