i have 1 10" mtx, 200w pioneer amp, and a crossover. Jvc deck and kenwood 6x9's. Pounds, i would never want anything more. I cant turn the volume up past half and you can feel the sterring wheel and front seats shake. Let alone when you drop down the armrest in the back seats and the sub is looking stait at you.
1 10" sub, in a nice box and a good amp will be plenty for you.
I have mine in a bandpass box if you wanted to know.