Honestly... The stock prop is pretty good on that boat. Unless your taching out (which shouldn't be the case) the 14.75x15.5 is pretty good on that boat. I know Mattscraft could only get about 39 on top end with his MCX 09 x2, which is all I can hit on my xstar.
Take the acme 1285 off the list if your goal is top end, that's a hardcore, stump pulling slammer-jammer wakeboard prop.