A reasonable plan, I'm not sure you are in any real danger of losing any CL's unless you give the CC company a reason to start looking at your accounts. Your plan seems like an OK one, I hope it works out for you. Any extra you have I would add to the minimum payments of all cards.
Welcome, @Anonymous. 
Your first priority should be to hopefully avoid adverse action, i.e. credit limit decreases and balance chasing. Start by paying each card down to 67% of its limit. That can be accomplished in your second month of payments with money to spare. Once you've done that, bring each card down to 47% of its limit.
The thresholds you want to cross are actually 68.9% and 48.9%. Paying to 67% and 47% will prevent the next month's interest charge from bumping you back over the threshold.
After all cards are at 47%, you can pay down as you like, e.g. highest interest first, snowballing small balances first, or aiming for a (slightly) quicker score gain.
@HeavenOhio wrote:Welcome, @Anonymous.
Your first priority should be to hopefully avoid adverse action, i.e. credit limit decreases and balance chasing. Start by paying each card down to 67% of its limit. That can be accomplished in your second month of payments with money to spare. Once you've done that, bring each card down to 47% of its limit.
The thresholds you want to cross are actually 68.9% and 48.9%. Paying to 67% and 47% will prevent the next month's interest charge from bumping you back over the threshold.
After all cards are at 47%, you can pay down as you like, e.g. highest interest first, snowballing small balances first, or aiming for a (slightly) quicker score gain.
These thresholds are for FICO scoring, and while that might pay a large part in issuers initiating AA, it's possible that other factors are much more critical. So I might still prioritize interest reduction over paying off to thresholds.
@Anonymous wrote:
@HeavenOhio wrote:Welcome, @Anonymous.
Your first priority should be to hopefully avoid adverse action, i.e. credit limit decreases and balance chasing. Start by paying each card down to 67% of its limit. That can be accomplished in your second month of payments with money to spare. Once you've done that, bring each card down to 47% of its limit.
The thresholds you want to cross are actually 68.9% and 48.9%. Paying to 67% and 47% will prevent the next month's interest charge from bumping you back over the threshold.
After all cards are at 47%, you can pay down as you like, e.g. highest interest first, snowballing small balances first, or aiming for a (slightly) quicker score gain.
These thresholds are for FICO scoring, and while that might pay a large part in issuers initiating AA, it's possible that other factors are much more critical. So I might still prioritize interest reduction over paying off to thresholds.
If scoring were the prime objective, I'd have suggested getting to 29% before moving to high interest first or another method. If it turns out that the OP is balance chased anyway, I'd simply revert to getting the balances down the fastest way possible, which would be to go with the highest interest first.
If the situation were more daunting, I'd have suggested getting to 87% first (which is still an option). But in this case, the OP can get to 67% pretty quickly. Still, high interest first can be incorporated into the earlier payments by getting all cards to 67% (high interest first), then 47% (high interest first).