So Im set on getting the Sundown SA 12, I found an amp that I think would be good for it but I don't know if its gonna be too much power.. Rockford Fosgate Prime 750 Watt Class D 1 channel Amplifier I assume it's one ohm stable so I'd need the SA 12 D2 correct? In the reviews people are saying that the birthsheets that come with the amp show its more like 850 rms.