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You really need to get your individual card UTIL's under 50% ASAP and then under 35%. I wouldn't worry too much about bring accounts to 0% unless it is easy to do. If so then by all means do. Once under 35% you want to focus on killing accounts off until you only have one account with higher UTIL (preferably) and then:
Optimal credit utilization for FICO scoring purposes is:
Anyway you get there is fair game. You only need have one revolving TL report a balance.