Adding altenator and batt

I am fixing to ditch all my Sound Q stuff and go for SPL....What I have bought so far is

2 Memphis M3mojo12s  12" 2ohm DVCs......1 MOJO 16-M2000D Amp (2000w x 1 @ 2ohms).....1 Optima Yellow top (I already have one so this makes 2).....And I have a stinger altenator on order....

Enough 1/0 wire to do the job....8ga to wire the speakers.....and a box is being built out of 1" MDF that will be covered in 2-3 coats of fiberglass resin......

The 1/0 has already been ran from the Optima in the front back to where the Amp will be....can I use that to link the two batts together then come off the second batt in the back to the amp or do I need to link them seperatly???and does the isolator need to be mounted any where special......

I need to know what needs to be done to wire the second altenator and the second batt into the car....

I want to put the second batt in the back...and I have a 1.5 farad cap left over from my SQ setup...should I use it or sell it....

basically what I want to know is do I need a battory Isolator.....and should there be anything between the 2 altenator to regulate voltage if so what??......and does this sound like a decent combo for SPL....I am putting this in a pontiac Grand Am....

Everthing is going to be either dynomatted or Rinolined by the end of the week....And the door skins are going to be crafted from 3/4 MDF....

some of this may sound a little overkill but I plan to add 2 more of the subs and another MOJO amp later....This is just to get started....

Any help is appreciated...