My kids won't just "rest" in the middle of the day. But, my youngest is will be 8 in Oct.
Our best bet is going to bed early, letting them sleep in (till 9, which would be very late for them), throwing clothes on (showering the night before), and catching the bus to MK for breakfast at 10 at Plaza. And, making sure we pace ourselves at MK.
Our plan after breakfast is Tomorrowland until 1 pm or so, then Pooh and maybe something else in Fantasyland before 2 pm BOG.
After lunch, walk around Tom Sawyer island. Then, FP for HM, IASM, Little Mermaid ride, Dumbo (if we can get them as 4th or more FP), or else HOP, Tiki, Country bears. The trick would be not criss crossing the park. Of course, appearances of hard to get FP might make criss crossing tempting.
Rest for a snack around 6 pm.
Dessert party 8 pm or so (we have the after party).
10 pm: ride astro orbiter.
After that: BTMR, Spash, Jungle cruise, or any FP we have or can get.
EMH: we'll see.