Nice. My idea is similar but doing boss reciever, 6 - 6.5" boss 3 way speakers, a boss amp and 2 - 8" subs. Thinking stereo and switch panel pretty much like yours, 2 6.5's front corners angled back at front seats and middle, 2 6.5's in corners above front seat angled forward and middle, the 2 8's in middle behind roll bar either straight down or angled into one another, 2 6.5's in back corners angled forward and middle with amp mounted in middle of back section.with color partially hidden color changing lights worked in somehow around perimeter. Might do 8's more toward outside and leave room for something else in middle. Maybe 10" or 12"?? This is what's in my head right now anyway. Subject to change who knows how many times. Lol