closing down that aperature will give you nice star burst looking flare around the lights. And go a bit longer on that exposure to open up those shadows, the exposure it too dark. I think it would make for a real appealing shot if done a bit differently. But definitely bracket, shoot all different ways, shoot f2.8 f7 f 14 f22 while switching up the shutter too. And don't delete anything until your on the computer and you can look at the specs and analyze the picture to really get an understanding to what the camera is doing for you, sometimes you get a nice surprise!