Thanks for your service - I'll PM you. I will say the advantage to June is it's in the afternoon which is great if you're not a morning person like me. Otherwise September gives you more time if your PTs are not where you want them to be.
Even though you don't remember the questions, having seen them before is a huge advantage. You shouldn't gauge your skill level by these scores, they are almost certainly far higher than what you would score on a new test.