I have a 47' regal with cabin area and engine room to put equipment. I have room for 4-5x9" speakers and 2-6.5in speakers and up to 3-4 subs all outside. Amps will be inside the cabin in a non-wet or corrosive environment. I have $3500-$4000 to spend on all the equipment I need. I am completely open to all suggestions. Please tell me what you would use and the equipment required. thanks!