It's a shame that Shahir seems to have so quickly disappeared because I believe that there is interest in this thread.
Maybe we could keep him here in spirit, sort of like a fantasy student.
Shahir, you should also decide upon one or more "informants". That's the term I learned long ago for the person whose speech one used for study. Way back then, I also learned that each person had his own "idiolect", as opposed to his "dialect". I suspect that an old, uneducated woman might give you the most extreme version of your dialect. Men, I believe, have, over history, been more prone to show signs of a world further away from the home.
Where I live, I know of such a woman that I would use for the study of my dialect.