Is Flickering Flame worth it?

I’ve got two Guls and thought of cubbing them up to get a Vex and make Flickering Flame. I’m on single player playing a Holy Fire Pally on Hell difficulty (varying between p5-p7) at the moment. I’ve just made it to act III.

Even though my pally wields a Grief, fire imunes are sometimes hard to take down, but they fall eventually.

My plan is to beat Hell and then make him into a Smiter to farm torches, though I’ve never farmed a single torch since I came back to D2.