Hi Maggie (that's my daughter's name too!)
I think your 7DMT time is fine. You are going in Sept.? With a pre-open BOG, you'll be able to hit A&E without much trouble at opening; use the rest of the morning to hit other high priority rides (PP, the Mountains, etc.) which will have very manageable waits until @11a.m.; have lunch; then start using your FP as the crowds build in the afternoon, while doing low priority (or "anytime") attractions in between FPs. If that 7DMT time is your latest FP time, you'll still have many hours left to grab 4th-and-beyond FPs, though in Sept. & with efficient morning touring you are likely to find you don't need them.
I highly recommend easywdw.com for guidance on which attractions you should hit in the first few hours of the day, and which you can leave for later and do "anytime." Hope that helps!
I think your 7DMT time is fine. You are going in Sept.? With a pre-open BOG, you'll be able to hit A&E without much trouble at opening; use the rest of the morning to hit other high priority rides (PP, the Mountains, etc.) which will have very manageable waits until @11a.m.; have lunch; then start using your FP as the crowds build in the afternoon, while doing low priority (or "anytime") attractions in between FPs. If that 7DMT time is your latest FP time, you'll still have many hours left to grab 4th-and-beyond FPs, though in Sept. & with efficient morning touring you are likely to find you don't need them.
I highly recommend easywdw.com for guidance on which attractions you should hit in the first few hours of the day, and which you can leave for later and do "anytime." Hope that helps!