[1.1.4.2] 'The Amurrrican' DW Pistol Purifier (Red, White & Blue damage types - Fire, Ice & Lightning)

As far as I understand, you use self found gear here ? So besides craft able/farmable/fraction items it does not make any sense to comment on your gear choices.

I would still as recommended look up other ranged auto attack build why they chose their respective skill distribution. For example, this one:

or even better, since the build has more explanation:

With no experience in ranged auto attacks, I would go for skill with +flat damage, resist reduction and %fire and/or %lightning or elemental.

If you have question, why one skill was chosen over the other just asked in threads themselves or here with an @<< thread author>>

For example for your build, I would max out :
deadly aim and aura of Censure

drop some points from the upper skill row in inquisitor and move them into

flashbang and arcane empowerment.