I don't have pics for you, but certainly according to all the very good wake boarding guys (wake snobs) I know, you do not need 4000lbs of ballast on an X25. Most people can't believe the wake with no ballast and typically stock ballast is as much as most people would ever want or need. This is one of the benefits of this boat. (Stock Ballast and you are ready to rock it) Extra ballast is typically added for surfing when sans people
on the 25.
As far as the 6.0, there is a post here debating it, basically plenty of power for the boat, 6.2 is really nice for better gas consumption, but certainly at a debatable value for the up-charge difference. Demo the boat, I think you will be shocked at the wake with stock!