I'm not sure what schedule you're looking at, but the website has an 8am opening for 9/26, 9/28, and 9/30 (likely to compensate for the earlier closure due to MHP). Even though you're losing evening hours, if you make Wednesday rope drop, you should have a nice quiet morning since historically Wednesdays are some of the less crowded days, plus an opening that early means rope-drop won't be as crowded as a 10am opening. If you rope-drop, you'll have nine hours in the park before you'd have to leave (although fair warning, those last three hours will be extra crowded with the overlap of day guests and MHP guests).
For non MHP nights, DL evening entertainment is reduced midweek, but WOC will be showing nightly. DCA will be noticeably more more crowded once the Halloween parties start (6pm for 9/26 and 9/28, 7pm for 9/30) and everyone else has to leave DL. PTN parade is no longer showing, although there are rumors it will return seasonally, but unfortunately that doesn't help you next week. Instead, there's a second Soundsational parade on the non-MHP weekends at 7pm along with the"Fantasy in the Sky" fireworks show.
I'd consider rope-dropping DL on the MHP nights and then braving the crowds at DCA for the evening entertainment/atmosphere, and vice-versa on non MHP nights (rope-dropping DCA and then switching to DL for the evening entertainment/atmosphere) -- provided you have park hoppers, of course, which I highly recommend so you can make the most of your time.