Ratfolk: Gun-Chemist can some Review what i have so far and advise me on the future of the build

[Nosta1300]

Gowing Ratfolk as I really don't want to play a human (I'm a sucker for the extra feat)
And no one in the group has been a ratfolk before so it seemed fun

I was going play a pirate / party face but was asked to reconsider as a new player wants to go down that route.

So far here is my build

Rats:

Name: Want something German
Race: Ratfolk
Class:Gun-Chemist (3)

Stats: STR: 10 Dex 18 CON 12 INT 18 WIS 12 CHA 7 (Stats are base on a 20 point buy after racial Adjustments)

Character / Racial Traits
Taking Scent
Taking Defensive Strategist
Taking Pragmatic Activator

Feats
LV (1) - Point Blank Shot? Not sure as I plan to use a dragon pistol
LV (3) - Unsure Maybe extra Discovery

Discovery Lv 2 smoke Bomb Lv 3 Explosive missle.