So, I thought I'd try to come up with a fun sneaky character and could use some help with it.
My idea is a ranged stealther using a double barreled firearm, a cutpurse rogue and arcane trickster.
Why this odd combo? I want to shoot someone with a firearm (both barrels as they count as 1 attack vs. a single target), and proc "Stab and Grab" to steal things from them at range (holy symbols, spell comps, weapons etc). Arcane Trickster for the "Ranged Legerdemain" - placing exploding things, poisons etc on the target.
Entry into Arcane Trickster is through the newish SLA ruling and either a trait to give mage hand, or the rogue talent.
Ranged Sneak attacks via Sniper Goggles.
Class make ups:
Rogue/Ninja(Cutpurse)3, Gunslinger 5, Arcane Trickster 1. Probably Musket Master, though if there was a good pistol/sword Swashbuckler option I'd look at that.
(I haven't heard if applying archetypes from a parent class to one of the play test classes is legal or not. If so, Investigator or Slayer would be nice.)
5 Gunslinger gets me just about all I need feat wise and the +dex mod to damage for the firearms, so I'm not really sure how to finish this out. I was leaning toward full rogue/ninja, however I'm not sold on it yet. Fighter is tempting for the bonus feats and possible duelist gloves, but a caster or alchemist could be nice for some options aside from pew-pew.
Thoughts on how to finish this out?
I always thought ranged legerdemain and a level 8 alchemist would be fun. Go around covertly slipping delayed bombs into pouches after taking their gold.
The only problem with your plan is you do not have a caster level so Arcane trickster is pretty useless. You can get early entry into the class with SLA, but without a caster level you do not get any more spells. You need at least one level of arcane caster to be able to cast spells.