Paying down those CC is going to help your utilization. The lower the balances, the better. Both of those cards are nearing the maxed out for FICO. I think it is 70% when they are maxed out but I could be wrong.
No, the last thing you want to do is decrease your CL with those high balances. That would wreak havoc on your utilization.
I would keep both of them. Let one report a 0 balance the other at 9% or below. This is typically done when rebuilding to garner the highest FICO score in the shortest time.
FICO likes to see you use your credit but wisely. And don't let both cards report a 0 balance.
Your score is good so you can play around with the % and see what works best for you.