id say fire is better if going for an economy build. don't even need gcs or enigma. throw on hysteria armor,, a self crafted ammy and rare rings either gambled or from ormus, non-rotw fire sunder, flickering flame on self, and a random insight to self wield and you are good to go. The most expensive item for this build is really any random diabolos book and cta. infinity does help loads though, but pretty sure you could get by with enough -fire res from items and maybe a plague a5 merc if you really needed some more -res.
Yea a sunder and flickering flame go a long way
You can just play naked playing tainted tho