Wakeman the motor is a Merc 6.2. I think it is 330HP with 1:1.5 V-Drive and 14x16 OJ 4-prop. The one thing I don't like is that the boat is heavy on the driver's side. I have too weight the other side when its just me and my wife. Too even up the wake. I have driven a 03 Session. The boat takes longer to plane and when weighted heavy it drops off plane in double-ups less than @23-24mph. The wake is bigger and steeper in the 03. The 04 is easier to drive. My double-ups are tight do to the size of my lake and the 04 drives better for this and gets on plane faster when loaded up.
Jon, My wife uses the sundeck and she doesn't use the flip out part. Its big enough without, but I guess you could use it for 2-3 people at one time.
D- I got a great deal on the boat. If you have cash I could you hook up. I know of a couple 04s that are still around. I have wakeboarded behind SANTE, WakesetterVLX. I would say my wake is rampy compared to these boat. SANTE very steep. The VLX with over 2k weight most in back pretty steep too. VLX drives poorly this way and speed is @ 24mph. I usually run @ 1.5k and if you add 6-8 people the wake is pretty close in height just more rampy. Here are some pictures.