How close is too close?

We will be having a brick fence in the front. When it comes to brick pillars bow close together between the two is too close?

If we make the path to the front doors wider and match it to the width of the doors the gap between the two pillars will be smaller.

I also wanted the driveway to only be the inner width of the garage door.... Should we perhaps make it wider so that we only have one brick post in between the two gates? Or should we still have two posts, even if they are close together?

B