Remember you don't want to run a little amp and turn it up alot clipping the signal.. Better to get a little bigger and keep down so nice clean power.. Thats the key in my opinion
Solid 600 not that safe but keep the hifonics down a bit don't have to turn it up alot.. I run 500 on mine... Been bout 10months of slammin still lookin brand new
http://www.sonicelectronix.com/item_13492_...DSC+1000.1.html
http://www.sonicelectronix.com/item_12210_...+BXi+1208D.html
Those would be my suggestions MB Quart class a/b little cheaper... Hifonics Class D...
Getting the kenwood? If you don't have the kenwood theres much better amps for the money.. 1Ohm rating not even shown for the kenwood... 300.1 not gonna do much to a pair of cvr's either...
Another Pos and Neg run to back batteries would do good... You really need some better quality stuff to run from back batterys to amp tho cuz thats your main problem.. Fosgate, Kicker, Knu ect... even Stinger something you know will handle 300amps