Go for the 525!
I’m running that exact prop on my 2010 Response CB with a 1:1 transmission and the 330hp LCR engine @ about 220ft elevation and it’s a perfect fit! (Went from the oem 515 to the 525 a few years back, still have the 515 as a spare. RPMs went up about 120. And even with the 525 I’m still not redlining @ wot.)
There will be no difference in the wake between these 2 props, however, the 525 will give you a better holeshot and better speed holding capabilities while towing a skier through the course.
FYI
ACME 515, 13x12, 0.8 pitch
ACME 525, 13x11.5, 0.8 pitch