Nothing wrong with fire/storm...the damage is high and so is the end use. My current (relatively UnIOed) build uses the Stone Epic as you are in melee must of the time. I haven't looked into macros much but there are ones that can drop the targeted pet powers (freezing rain, tornado) at your feet.
Generally I drop bonfire > fire cages (if group is bunched up enough) > run in and smash em with freezing rain, tornado, lightning storm, seismic smash and fissure.
I almost never use flashfire unless you need to control a second group/over aggro and have never needed cinders. YMMV