Answers: You'll be more than fine with 500watts RMS on a factory 100amp alternator.
More battery are only good for longer listen time with the car stale.
Caps are never a good idea as they just stress the alternator more -another thing it's gotta keep charged.
Do the Big3 upgrade and you'll be fine;
http://www.the12volt.com/installbay/foru...
After the Big3, you may upgrade to a Redtop.
Hi. I would hookup the system 1st. consequently if the lights dim as the volume is up a better alternator would be the 1st thing to do. The battery is with the sole purpose as good as the system charging it. A lighning cap would also be a angelic idea for the charging system factor.
Hope it helps. They Optima battery-operated would be a good addition to comfort you out but one thing you didn't mention that I would get is a worthy cap. That will help out considerably.
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