That would be fine under hood, but also include 2 other big batts(powermaster 3100, Kinetik 2400, NSB90, etc).
With 3k+ daily, I'd definitely suggest u run an HO alt... Anywhere from 200-300amp would do well, i'd suggest 250a and up though.
Scores wise, who the hell knows lol... Could be anywhere from 135-150+ depending on enclosure, voltage, imp. rise, etc. I know you want people to "hear you coming" but please don't be another one of the idiots who sits @ red lights or pulling into gas stations at full tilt.