A better idea is to apply for the card that you want, and if you get a denial letter stating that you have too much credit, you can call Chase and ask to reduce your credit on one open account to allow you to get a second account.

But since all of your credit lines are pretty low, you don't have much room. If you have a card with three months of no activity on it, you can call Chase and ask to have the credit limit combined with another account. The first card gets closed, at the request of consumer, and your total credit limit to debt ratio is unchanged, so no bad impact on your credit score.