Very nice for a daily driver. It'll be fun to drive, relatively economical with a V6, and will have the power to survive NJ commuting.
I would suggest no modifications except your head unit swap. This is a daily driver, not a show or go car. Don't spend a lot of money on it, just enjoy it for what it is and save the money for other things. It's a black car so will need cleaning regularly.
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I USED TO HAVE an 85 Camaro 305 4bbl, 90 Firebird V6, 97 Firebird V6 (10 speakers!). Despite the two family vehicles, 3 kids, wife and mortgage, I can finally realize the dream - 88 TA almost all stock... for now.
http://www.cardomain.com/id/untameddave
Wanted this -

, but ended up with this -

for free. Can't argue with free.