Hey guys, I need some help. No vague answers please, its not hypothetical , I actually have the cash and resources. I'm guessing I need a more powerful alternator and a second battery. Im not going to push my system to the limit 24/7 , its a daily driver car. Honda prelude 2001. I have 2 kicker l7's in a garbage enclosure because the trunk is so small. Here is what I want the system to be.

Here is my current system,

Duralast gold.
Stock honda prelude alternator.
0 gauge to a distribution block.
2 sets of 4 gauge power to my amps from the block.
Pioneer deh-7200hd deck
Clarion eqs746
Infinity kappa four 1200w 4ch amp for my interiors
Hifonics 1200w mono amp or my subs.
2 dvc 4 ohm kicker l7's wired down to 1 ohm.
Polk audio mm6501's for my front doors.
Polk audio mm691's for my rear.

Here is what I'm changing :
One 12" fi btl 2000w rms
Hifonics bxi2010d to power it
2nd battery - Kinetik Hc2400
And a new alternator , around 170 amps im guessing.

How would I go about hooking up the second battery? Also any ideas on where I can get a reliable high output alternator? One more thing, would I be running 0 gauge to everything if I do this setup?