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don't app for anything else right now, just work on raising your existing limits on your nfcu and carecredit cards. ask for cli's on all the cards but these are the ones that can grow big limits. also forget all about 30% utilization, try to keep it under 6%.
+1 to having patience, yo. It really is difficult to be patient when one wants to see those credit scores improve, but I think you are at a really great place right now, Lola. And kudos to you for find these forums so early in the credit game and seeking advice.
My advice is to head to the Garden and don't app for any new credit at this point and allow your accounts to age. As stated previously, Cap One will increase your credit limit after five, on-time payments, but from my time on the forums, I've learned they don't grow much past that. You can, however, Product Change (PC) to another card (e.g. Cap One Platinum to Quicksilver), which may give you a better chance at seeing higher limits. I think the jury might still be out on that one.
Definitely work on your relationship with Navy and after 91 days and 3 statements, you can apply for a Credit Limit Increase (CLI) with your current card that will likely only end in a soft pull (However, as others will tell you, always plan on a hard pull with NFCU lol) and you can likely see a huge increase from there. Then, as others have said, I think six months would be a great time to wait and app for a 2nd NFCU card. With your scores along with keeping your credit file clean and tending your new accounts, you should see some nice gains with NFCU.
I wish you luck and welcome to the forums!