Rittenhouse Square-raised Adam Goldstein, better known as DJ AM, is a strategic partner and musical director of Dusk at Caesars in Atlantic City. On Friday the club is holding a private party but opens to the public with DJ AM spinning on July 4. Eric Millstein, former nightlife coordinator at the Borgata, where DJ AM often performed, left the Borgata in September and joined marketing group Red Stripe Plane Group to launch Dusk. The club will be open Tuesdays, Fridays and Saturdays. He expects athletes and celebrities to show up, but Dusk will not hire celebs to host parties. It'll be the only A.C. spot where AM spins. Many of the club's DJs will be on his Deckstar label. AM wasn't sidelined long from a September plane crash in South Carolina in which he was seriously injured. Four people were killed in the crash in which only AM and his friend and musical collaborator Travis Barker, of blink-182, survived.