Sounds like a decent plan to me. You currently have afternoon rain chance for every day except Tue/Fri, but this time of year it's good to plan on rain chance every day and check in the am if you should bring a poncho. We were lucky in that the hurricane hit 3 days before arrival date and knocked out the rain from the system so that it didn't rain for us at all over 8 days, highly unusual in Sept. Low to mid 80's for you too, not scorching hot either, which is nice. We typically take ponchos plus sandals for days we don't want socks/shoes on if it's going to be torrential. But lately, with how much our feet hurt from standing/walking all day, we've just stuck with cushy running shoes. We don't really plan around weather at all since our park plans are typically set well in advance and we usually stick to them. I do prefer EP or MK in longer rainy weather though. I'm usually ok being holed up at the Land Pav riding Soarin' and Living with the Land over and over again, and places like Carousel of Progress, Monsters, and quick jogs between indoor attractions in the rain at MK vs. very few shelters at AK.
What's the plan for your day off? We usually don't have those, but in the past we've gone to a water park in the am, putt putt after, Disney Springs in evening for shopping/dinner. Occasionally a Cirque or movie at DS. Most recently we went to Fort Wilderness and did a Hoop Dee Doo dinner show. We sometimes just hang out at the Fort for the outdoor activities, campfire sing a long. There's nostalgia there for me, since all of my childhood trips were at the Fort when there were just MK & EP.
