How large is your party? I was just there yesterday. I had one eight year-old and two teenagers. I think your plan is do-able for older kids like mine, but I have to say, we were only their five hours and we were exhausted. We are passholders and had work in the morning and took off the afternoon for AK.
1:00 Arrive at the park
1:05 Loaded tram
1:10 Arrived at gate, went to the restroom, rented wheelchair (16 y/o had a broken toe)
1:17 Rented locker by Kali River Rapids, and used restroom.
1:25 Got in line for Kali River Rapids (had fast pass)
1:30 Rode Kali
1:50 Walked to Dinoland and used restroom
2:00 Got in line for Primeval Whirl
2:30 Rode Primeval Whirl
2:45 Got in line for Triceratops spin
3:00 Rode Triceratops Spin
3:10 Walked to Everest
3:15 Got in line for Everest (Fast Pass)
3:30 Walked to lockers and got our belongings out since we didn't plan on going back to that part of the park.
3:45 Arrived in Africa and walked around a few minutes and decided to do Lion King
4:00 Lion King
4:45 Headed over to Marambe Market and ate a snack out of our own bags while waiting for our Safari Fast Pass (we were exhausted at this point)
5:00 Got in line for Safari. The fast pass line was 15 minutes.
5:15 Rode Safari
5:40 Walked the Gorilla Falls
6:15 Decided we were exhausted and decided to go home.
6:30 left the park
The crowd level was at a 7:00 and it was moderately hot. You will be able to do a little more than we were but if you have little kids and if you have a stroller and lunch reservations I would say you probably will get in about as much as we did in the five hours we were there. We are active and have a lot of stamina but the crowd does steal your energy, so you won't have our challenges, but I do think you need to pad another 10 minutes between each activity even with the low crowd level. I have found that AK always seems crowded no matter what the wait times on the rides when it comes to walking space and it is draining. I've been there a half dozen times this year.