I think the best way to handle it is to send one person to KS to pick up fastpasses for everybody, then meet at Dinosaur and ride it. Then work your way through Asia, doing Primeval Whirl, TTBaB and Kali River, then you should be ready for your Fastpass. You'll have circled the park in the opposite direction from how most people do it, and you'll still get on the Safari in the morning.