Flame Totem: Wand vs Scepter vs... Staff?

Maybe you can continue the route you've taken, and see how far you can go with it.
There will be a full passive reset anyway with 3.0, so if you're not satisfied with your build, you will be able to try the crit route for free.

Ya well, at my level, with a 5L, my dps isnt extraodinary: killing Dried Lake's Voll takes me about 6 seconds. At the same level, with my melee characters, I would have killed him at least twice as fast.

Maybe being Chieftain is the problem, I don't know.

I don't mind deleting/restarting a character, but I was expecting much more from Flame Totems (Ancestral Bond). Gear isn't bad... so...

Take a look here, this is the guide I've been following for the most part (I've done some slight modifications, but the core concept is here) :
https://www.pathofexile.com/forum/view-thread/1702947