LOL, You should change the thread title to Racism Required!
... She has is set so that humans are equivilent to the historically accurate white people of the time. And the historical Mexicans are represented by orcs. Indians by elves. Ireland/Scottish by dwarves. She made it clear that if you didn't choose human it would have in-game negative effect. ...This is going to offend a LOT of people.
Having said that, I would be tempted to try a switch hitter that uses a weapon that can be thrown or used in melee. Dagger, starknife, short spear, and trident could all be kinda fun and different.
Or the combo weapons, they are pretty cool. Not optimal, but for a setting like this, probably appropriate. If the focus of the game is on firearms, perhaps some more weapons like this.
Shortsword/double barreled pistol? Sounds super fun to me. :D
