Let me ask what I should have asked initially: do you have a specific reason why you feel that you need a higher-limit card now, or does this just seem like the next step on your path?
You have four good cards (depending on whether the Cap1 will grow, or if it's one of those with a built-in ceiling.) If you are willing to be patient, let your accounts age, and let your scores rise, you will be in the wonderful position of having CCC's fighting over you, instead of you asking them to let you in.
One very useful thing to do is to look at your reports and see when you have any "birthdays" coming up. If you know your AAoA (average age of accounts) in years and months, how long before it rolls over to the next year older? And especially, when is it due to turn 2 years old, 5 years old, 8 years old? Same for oldest account. If you have any baddies, are any about to turn one year old, two, three, fall off your reports? Your Chase is 4 months old, so in 2 months you should get a tiny bump for its half-birthday. Any other accounts about to hit even-year figures?
I'd give a good look-over to your reports and see what should be happening when, plus keep knocking off the balances. You'll get much better responses when you've hit a few more milestones, the util is way down, and your scores go over 700. Which could be sooner than you think!
* Credit is a wonderful servant, but a terrible master. * Who's the boss --you or your credit?
FICO's: EQ 781 - TU 793 - EX 779 (from PSECU) - Done credit hunting; having fun with credit gardening. - EQ 590 on 5/14/2007