First of all, not to argue with you, but why do you want higher credit limits? Do you want higher limits on individual cards, or do you want a higher overall credit limit? The answer to this will help you figure out where you want to go.
I came up with a total of $23.1K CL, which I agree seems low for someone with your scores. This seems like a good time for you to inventory what exactly you want from your credit. Can you use some rewards, either points or cash back, in certain categories? Do you need one big honking emergency card with a high CL? Do you just generally want to have a better credit profile, with higher individual CL's?
Unless you have some extraordinary sentimental attachment, I would think that it's time to let the bottom two cards go, unless they don't have annual fees. And even if they don't have fees, it's possible that their low CL's are dragging your overall credit picture down. (I've read this in various places.) If they are by far your oldest cards, you might want to try to wrestle them up to $1000, but if there isn't much of a time gap between them and the next oldest cards, they might not be worth keeping. Closed accounts are supposed to stay on your reports for ten years after closing, so any history damage would be delayed. If the other accounts were opened soon after these, there might not be any damage in 10 years at all.
What exactly are your Citi and Chase cards? In general, some CC's have built-in ceilings on their CL's, so you need to make sure that you aren't stuck with those. But again, with scores like yours, and especially with your clean history, you ought to be able to get some cards from good lenders with reasonably high CL's that will increase with time.
If you are looking for a non-crazy CCC that gives high credit limits, I would strongly suggest one of the nationally-based credit unions like JFCU (Justice FCU), or possibly one in your area, if they issue high-limit cards. Right now, other than BofA, my high-limit cards are CU cards. The best bet with CLI requests is to ask the CSR whether they will be hards or not, and then hope that they know what they're talking about. Everything I've read about Chase says that a customer-requested CLI will generate a hard, and I've also read the same about Citi, although I've never been harded for a CLI on my Sears Citi card. (They haven't particularly worked, either, lol.) HTH
* 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