I have a 2014 SAN230 with NSS. I ordered mine with the pro-ballast option, but have swapped out those bags for 750s. With factory pro-ballast configuration the wake is very nice. With the 750's it is awesome! Our regular crew normally all ride at 10.9mph, full ballast, NNS of 1or2, and hydrogate at 1 to 2. And have the people sitting biasing the surf side. We increase the hydrogate setting when there is more people in the boat. Running at a slower speed will increase the wake size. I don't think you will be disappointed at all. We can also ride and recover far back. Having boards that perform is also a bonus.
Good luck with your demo. If it only has the pro-ballast, think about adding bags on top of the factory bags during your demo, so you get a feel for what the wake would be like with 750s.