I’d say the best DW ranged build is neither purifier nor pyromancer but vindicator. That is unless you mind casting some boxes and totems once in a while (which makes it more of a hybrid than pure ranged). Search the forums for Ludrigan. Here’s my old thread but none of those setups include the optimal setup with double Storm Witch ring and maxed Box (I didn’t like the Box at that time and I was wrong). [1.1.1.2] Duel of Savage Totemists - Ludrigan and Stormreaver vindicators comparison
As for gear accessibility, I think it’s easiest to make something out of nothing with a purifier.