So much knowledge in one place, where to start!

So, I'm liking the idea of a character that utilizes 2 double-barreled pistols.

Assuming this is legal in Society play...

I would choose Pistolero, and eventually save up for 2 of the double barrels.

Does anyone have a general skeleton to a build like this? Perhaps with a breakdown of the first 4-5 levels?

I'm pretty noob to most of PFS but Gunslinger seems like one of the higher skill curve characters that can become extremely powerful when utilized correctly. And there's just a ton of flavor when it comes to character creation :)