My vote is a 2 bedroom standard view at Kidani. There are TONS of places to go view the animals at both Kidani and Jambo. Most of them with better views than a lot of the rooms.
Since you are going for 8 nights, you'll appreciate having more space to spread out, rather than trying to cramp in.
Imagine it: You and your husband in a bedroom, and your 3 girls in the living room...Two on the sofa bed, one on the sleeper chair. That's the only way that works in a 1 bedroom.
Now if you are in a 2 bedroom, you and your husband in the master. One girl on each queen bed and another in the living room on the pull out chair or sofa. Plenty of space to spread out.
Finally, the 2 bedroom will also get you an extra bathroom. With 4 girls going, that extra bathroom can save you tons of time in the morning.
If you were only going for 4, maybe 5, nights or less then you might want to get the savanna view. But with 8 nights, and everyone right on top of each other like that, everyone will definitely appreciate the ability to spread out and have some personal space.