^^^^ i agree. it is a matter of preference, but unless your running 7k rms two alts wouldn't be needed so long as you have a sufficient amount of battery reserve power. in terms of hooking it all up...... the purpose of the electrical system is to deliver power to the big amps (forget the little amps, priority are to the large amps). when the amp draws power most of the demand will be met by the battery bank. the alternator will help with this demand, but it more so is there to recahrge you battery bank. furthermore, the best way to satisfy this is to have a battery bank consisting of all your batteries together right next to your big amps. if space allowed batteries to all be together, i would never separate them, simply because this makes it harder for power to get from those separated battereis to the hungry amps.
with all the batteries together the best way to connect them together is with a bus bar- but the batteries must line up properly for this to work.
also, i'd recommend running a full ground from front to back. meaning wire the negative wires like you would the positive ones.
