high current system in boat

Setting up a system for a boat, just looking for second opinions on whether or not I am providing enough power to my amps. Here is a list of equipment: 2 Rockford Fosgate Power T1500-1bd Amps(running at 2 ohms each, approx. 1200 Watts RMS each) 4 Rockford Fosgate Power T600-4 Amps(2 running bridged at 4 ohms 2 running stereo at 4 ohms, approx 450 Watts RMS each) 2 Kicker L7 12" Subs 4 Pairs of Diamond Audio D661i 6-1/2" Coaxial Speakers 2 Pairs of Diamond Audio D661 6-1/2" Component Speakers in Towers Rockford tech says the 6 amps together are going to pull 500 amps of continuous current. My current plan is to run 2 Kinetik Audio HC1400 Power Cells as a secondary battery, use a high output alternator(hoping to get it rewound to at least 200 amps, not sure yet what we can get yet)and a Rockford Fosgate 10 Farad Hybrid Cap if nothing else just as a safety net. My customer almost never has the stereo on without at least idling the boat, and if he does, it's only for 5 minutes at the most. Anybody have any comments, ideas, criticism, approval or anything to say about this set up?*beep rap tik beep beep*68% efficiency at 1 ohm*beep tik*

I'd say get two 250 amp alts and like 8-10 2400 batteries