To add to a lot of other people's answers, it also matters when you go and if you have daytime admission to the parks.
My friends and I went the weekend before Halloween through to Halloween last year and had admission to the parks by day but we did not have express. Using Stay and Scream, we were able to get AHS, The Shining, Dead Waters, Fallen, Scarecrow (twice), Hive (twice), and Blumhouse all done before 9pm every night we went. To put that into perspective, we went four nights and sometimes we got all of those done as early as 8pm or 8:30 depending upon crowds.
It really is all down to planning and how quickly you are willing to move from one house to the next. My biggest piece of advice is, just keep an eye on the app and read here about the actual wait times before your visit to try to get a better idea of what fills up and holds a line all night.