Help with a Vivisectionist Arcane Trickster build

[King In Red]

Hello World, I need your help for a build, after reading many topics about the Arcane Trickster now I have more doubts than before about it.
Some say that the right way is Rogue 3 / Wizard 3, other than the Rogue can be easily replaced by Vivisectionist.
Now what I ask is to give me advice about building a character that is not a complete duffer, but it can be interesting to roleplaying and useful (both in combat and out [I prefer low social skills for roleplay reason]) at the same time.
It starts at 9th level, so any advice about the races, traits, feats, spells and whatever else is welcome.
Thank You.

[CampinCarl9127]

I am in no way an expert in this area, but in one of my current games I'm playing a half-drow (half-elf that's drow descended) who's going on a very similar route. Here is his profile. I noticed what's nice is dipping into assassin for the quicker access to sneak attack for the arcane trickster prerequisites.

[LoneKnave]

At 9th level, you can get evangelist going easily; that should raise your BAB and skills up quite a bit for AT.

Easiest entry is Snakebite striker 1/rog1/wiz2/AT and then evangelist.

Your BAB will still be terrible, but at least it's getting better. You are using SLAs to qualify of course.

Alternate entries that may be worth a shot, depending on DM ruling:

-4 levels of greensting Magus (technically needs to be spending pool points for SA)
-1 Level of Snakebite Striker Strangler Brawler (gets 2d6 SA but only when grappling, and technically both modify skills so... very maybe?)

Also, with the familiar folio out, I think I can safely say that 2 levels of carnivalist rogue is not entirely wasted, if you don't mind managing the familiar.