Which of these 3 places would be most suitable for a 1st date?

I say the park. You can not really talk and get to know one another at the movies, and you may feel pressured to buy her something at the mall (or she may be looking for you buy her something). Try a nice, big park. In atlanta there is a park that does water shows sometimes, so maybe you guys have something similar or some kind of other feature. And also check online to see what kind of free events are going on in your area, at the park or whatever. Hope this helps!