3Mutts, are you talking about the Balin's Jungleland path or the Safari Discoveries path? Balin's Jungle (AKA the actual "Official" path) just opened/was open on my visit earlier this month (July 10th), so I did not need to walk through the animal exhibits making it marginally quicker. The official path is right behind the Dippin' Dots stand in the Google Maps walkthrough, but is blocked off with fencing.
coasterBro, Most flashpass lines converge on the station, and there is no row restriction. As for loose articles, unfortunately it's more Universal style where there is nothing allowed in your pockets, and if they suspect you have loose articles they'll ask you to turn out your pockets or metal wand you. The loose article policy also covers Joker. Lockers aren't as bad as most moan about, being $1 for two hours, which means you can easily hit multiple rides with one locker.
As for whether or not you'll need a Flashpass... it depends when exactly you're going and how lucky you get. If you mean a Fright Fest Sunday in September, then it'll be dead, but if you mean around Labor day it could be mobbed. You can't really accurately predict crowds at this park. I'd budget for one and purchase it in the park depending how lines are.