I have the same delima. Testing boats in similar conditions with the way we load our boats with typical gear and people is a pita.
I have heard the 30 does not take big lake boat chop as well as a 25 but at 1'7" greater length, that must mean that the 30 does not cut through very well?
We wakeboard more than we surf but we are looking for a thrilling ride. I don't mind plumbing in extra ballast but refuse to have it in the way if that makes a difference.