Am I crazy that I put my highest stat in Wisdom at first level in order to maximize grit pool, knowing that my BAB would make up for my lower Dex bonus? Also realizing that I can raise that as I level? I put a higher odd numbered stat (which you don't seem to have) in Dex for the modifier increase when I can get it.
This way I also maximize my Will Saves, which are poor for a Gunslinger.