Seeking concealed carry solutions as a female immigrant.

Hi. I am a female Asian American immigrant in Chicago and I am looking for concealed carry solutions.Several factors that I need help with:What handgun should I carry? Right now I am considering a choice between G42, G43X, M&P Shield, P365.What kind of ammunition should I select for EDC and training?What attachments should I get? As far as I know there's not many options for these sub-compact pistols.What kind of holster should I get? I am finance analyst so I wear suits on a daily basis. Also, I'm a relatively skinny person. Example link to women's suit (as requested by comments)Any other useful information is welcomed.Photo of me in a suit. via /r/CCW http://bit.ly/2LonGz3