Ive already got a XS power battery and have the Big 4 with 1/0 wire, so I think it can take it.
You should have no problem then running that. Those subs will be begging for more though. How did everyone figure out that .66. I have only ever used 12volt and could never find anything I would understand for formulas to figure out how to do what ever configuration I wanted.
I use these websites........... http://www.bcae1.com/spkrmlti.htm
http://www.speakerimpedance.co.uk/?page=calculator