Summer is a gorgeous name, i wanted it to be my girls first name but DP likes it better as a middle name. But i dont see it as growing old or not fitting her when shes older. Its a classic lovely name. But by having a strong middle name can help her as well, i like Summer Elizabeth.

ETA: Summer Lesley is lovely! i like and i hope you have a girl too. I find out in 12 days what im having and im hoping for a girl.