I think what im going to go with is the following for starters
2x sq hdc4 15s
2x sq3500.1d
4x of those batteries I linked.
then a 50' spool of 1/0AWG OFC (for starters so I dont over buy)
Have my alt rewound to 300-320amps if possible.
For the general setup, wall in back seat, aeroport...