Speaking as Disboards' foremost expert on rope-dropping Dinoland, I wouldn't be surprised if you ride Dinosaur by yourselves with this plan. I think your plan could work, but I would start with Everest and ride it multiple times if you like and then hit up KS. Dinosaur should be an easy lightning lane to get later and I'd hate to end up in a line on the other rides.
If you're there before the official beginning of early entry you may be able to rope drop Na'vi and then rope drop the right side of the park after that.
If you're there before the official beginning of early entry you may be able to rope drop Na'vi and then rope drop the right side of the park after that.