I'd recommend another EndRdx in Fire Cages because you're going to need to use it every time it is up otherwise you will be knocking everything out of the range of Hot Feet.
Hot Feet really needs to be taken at level 8 - it's your only real source of damage pre-imps and lets you solo hazard zone groups easily. I personally didn't take Hurricane because it repels mobs out of your Hot Feet radius, which is a bit pointless.
I also took Aid Self because the sets lack a self heal.