Replying to Six Flags Flash Pass?

I'm going to the six flags in jackson NJ tomorrow, do you think it would be worth buying the flash pass? Do you think it'll be super busy on a Thursday? I've never been to a six flags besides the great escape haha. And I'm going down from Watertown NY so its going to be a 5.5ish hour drive so I want it to be worth it. And I'm going down to visit some buddies from my xc team at school for a couple days. And does anybody know the best deals on tickets? Haha I'm so cheap.