I’m assuming your first day is October 10th - definitely going to be the lowest crowds you’ll see, so I would plan a full park day, if it was me. Are you staying onsite? If so, you’ll get so much benefit out of starting at rope drop. Rope Drop Epcot at 8am, do what you had planned - and then head to Magic Kingdom. Touring Plans is predicting a crowd level of 2 at MK that day, which is almost unheard of - so you should be able to get a lot done. Crowds will be so low you would probably be fine without rope dropping Thursday and Friday if your people like to sleep in. Whatever you do, enjoy Thursday and Friday! Crowd levels will pick up over the holiday weekend, dropping off slightly Tuesday, but not as low as before the weekend. Lots of schools have fall break during Columbus Day week, so do as much as you can your first two days and plan more afternoon breaks for the other days. Have fun!