I would put it towards the debt, even though you'd earn better by investing in theory. I couldn't sleep at night with that much credit card debt hanging over my head. And if it is an intro rate that will expire at the end of the year, I'd not totally rely on being able to come up with the funds to kill it before it shot up. If you used your 8K plus your bonus, that would half the amount owed on the card. Again, not saying this is the best solution, but it's what I'd do.
How much interest on the school loans?