I just put JL Audio on my 290 Sundancer/ put in the radar arch for sound while underway / only wish I had done it a long time ago / had to build spacer rings and cut the holes larger plus turn my antenna bolts around - but great sound and well worth ...
More is better but you're likely good. One recommendation is four wheel or all wheel drive for those steep ramps - when extracting your boat, you'll benefit from power to all 4 Wheels.
