You should try to get seating beore the park opens. That first hour in the park is worth two to three later depending how busy the park is, I'm not kidding. If you go ahead and do the 9:15 PS at CP be sure to pull a fast pass for something before you go in, maybe a member of your group can go and do it while the others sit down at CP. Then you can come out after the meal and still hit a ride or two while it is not too too crowded, then use your FP. Remember you can pull a new FP within 5 miunuts of the beginning return time on the FP you hold so, pull another one asap once you can. You should get on plenty of rides just fine if you do something like this.
Have a great time!