The good news is, you're traveling during a slower time of year, so peak waits for A&E are around 90 minutes (which as crazy as it sounds, is low for them).
Ideally, try to get to the park way before rope drop on a morning with EMH, so you're as close to the front of the line as possible. If you can't get there that early, the best bet is to wait until the last hour before the park closes, or better yet, visit during evening EMH. The wait at those times will still approach an hour, but it's better than the far longer wait that there will be for the rest of the day.
For what it's worth, here's what touringplans projects for A&E for your dates (the bracketed numbers are the range of projected wait times, in minutes, if you got in line at that time, on that hour). EMH have an asterisk. (As you can see, Saturday nights and mornings after rope drop (especially if you can get there for Thursday's morning EMH) will score you a wait of less than an hour. In the meantime, once your FP+ window opens, keep checking -- you never know if something might open up!
Fri, 9/12 - 9am(0) 10am-3pm(90-95) 3pm-6pm(75-80)
*Sat, 9/13 - 9am(0) 10am-2pm (90-95) 3pm-8pm(70-80) 9pm-10pm(60) *11pm-12am(50)
Sun, 9/14 - 9am(0) 10am-2pm (85-95) 3pm-6pm(75-85)
Mon, 9/15 - 9am(0) 10am-2pm (85-95) 3pm-6pm(70-80) 7pm-8pm(65-70)
Tue, 9/16 - 9am(0) 10am-2pm (85-90) 3pm-6pm(70-75)
Wed, 9/17 - 9am(0) 10am-2pm (80-90) 3pm-6pm(70-80) 7pm-8pm(65-70)
*Thu, 9/18 - *8am(0) 9am (95) 10am-1pm (85-90) 2pm-5pm(75-85) 6pm-7pm(70) 8pm-9pm(60)
Fri, 9/19 - 9am(0) 10am-2pm (90-95) 3pm-6pm(75-85)
*Sat, 9/20 -9am(0) 10am-2pm (90-95) 3pm-8pm(70-85) 9pm-10pm(60) *11pm-12am(50-55)