Brooke, I'm in the same boat (no pun intended). When we load up with ballast and a lot of people, which is what we do for photo shoots many times, it can take a while to get up on plane.
Check out
Wakeside's propeller section. They've got most boats listed with recommendations for Acme props based on the amount of weight you run. I'm torn between the 537 and 857, but I'll probably eventually go with the 537 since a lot of extra weight isn't really necessary for "pro level" wakes in this boat.