Hey I'd like to say I'm in very similar shoes as you are!

I took July test in NYC and scored 165, planning to retake the test in Sept and feel like I could do better this time.

I plan to keep my score, because most AD officer said they only take into consideration the highest score, as long as you are not taking the test too many times, a 165+ won't really hurt you, it might even looks better than a "cancelled score".

it's simply safer to keep a "not bad" score. Plus there's financial incentive(one more “free” test) if you already signed up for Sept one.