Matt, I went all JL in my current boat and I'm Very Happy!!!!! I have 2 JL 300/4 running to a total of 5 pair of speakers and 1000/1 running 2 12 W6's. I have 3 pair of the XR 650's and 2 pair of the 690-Cxi's. I'm very impressed with the 6x9's. They're some of the best 6x9's I've heard in quite some time. My 6x9's are under the hatch and come up when I raise the hatch for added volume.
http://www2.***boat.com/image_center...C02119-med.JPG
http://www2.***boat.com/image_center...901_Small_.jpg
Batteries??? Hell it's time for the genny set up since you got all that room in the deck boat. Dude with a genny we could turn your boat into "Rain" with all the lights and sounds of a real club...
What would a genny set up cost? I was planning on going with the Lifeline 8D battery for the stereo with the optimas for each engine.