I got to use an x-25 with the stock prop for a few months and weighted it with 2 400s in the rear hatches and 2 400s in the front walk thru.
Does yours have the attitude adjustment plate?
If not, look into getting that feature added on. It makes a world of difference. Set it at 100%, get up to seed, then set it at 0% (I think there is a setting in the perfect pass system that will automatically raise and lower the plate so you don't have to every time). The boat will plane with a load of people plus that extra weight no problem.
The wake is awesome. Best of luck!