Amps: McIntosh Audison Boston Acoustics Diamond Audio Kenwood Excelon (best bang for the buck) Subs: Pioneer Premier (SPL world record holder) Boston Acoustics or Diamond Audio (sq) Image Dynamics RE Audio JL Audio ( wayyyy overpriced, but good stuff...
is your box ported? if it is then you dont want to use tones too much lower than that. If you're in a sealed box then you should be ok.
Sure. As long as you also like programming. Fluid dynamics problems work extensively with the Navier-Stokes equations, which are partial differential equations. There's a great deal of brute-force numeric computation to be done. So yeah.