If you wait, Barclays may increase the limit on their own. Do you actually need these limits to be increased, or do you just want a higher limit?
Having a skyrocket credit limit is not enough to be in 800 club, it takes a long time to build up as well.
I think you are having too enough credit and be careful with them, I heard in the future if you apply for mortgage, you may got bad advantage for having too much credit unless you can prove your income sufficient enough to back you up.
I don't have that much credit like you , for me 5 cards with 40k is quite enough , I also know I can surely back them up with my income.
( Not to rain on your credit march , just a friendly advice)
I don't need it... Lol it's part of my plan to have stellar credit. I've got to get to the 800 club somehow! Lol
You don't need a ton of credit to get into the 800 club. I only have one LOC with USB, ( 15K ), my Cash+ card ( 15K ), and my amex, ( 13K ), and I hit 834 back in 12/11. My oldest acct is 21 years and my aaoa is 7.5 yrs.