Anybody can take Naplex. What it matters if one can pass it or not.
In my case, I had much worse score for RxPrep practice exam than you but passed Naplex with no problem (I was scared since I thought I have definitely failed while I was taking the exam, but score turned out to be much higher than 75). But my PreNaplex score was over 90 (I think because I didn't get any HIV/Cancer questions).
I just wonder, it's already almost October, but you haven't taken your Naplex yet?