That's a tough one. A red 'Bird is a beautiful bass, and $600 is a lot of money. I don't know where you are, but I assume it's Oz.
I doubt that anything Gibson is making now has CITES problems, but who knows, what with Henry J running the company. He seems a little off kilter sometimes. As far as going into debt to buy a bass, how many months would it take, what else do you have to pay for, and how badly do you want the bass? If it's something you will kick yourself forever over if you miss it, and if you plan to have it forever, that's one set of facts. If you just kinda like it and want to try it out for a while and then think about selling it, that's another set of facts. You don't have money now, but will you have more than enough to pay back any debt, pay your expenses, and save up when January rolls around? And, what's the interest rate? If there isn't one, that's another one in favor of going for it. If there's an interest rate, the higher it goes, the more it says no.
That's a long non answer.