GENIUS MEMOIRS? They have an album and a tour. Now all Crosby, Stills, Nash & Young need to make their comeback complete are a few book deals. According to his agent, David Vigliano, Stephen Stills is mulling over offers for his autobiography, For What It’s Worth. Not to be outdone, David Crosby began circulating a proposal, Since Then, a sequel to his 1988 memoir, Long Time Gone. But following a recent New York Post gossip item about the band members’ competing projects, Crosby’s agent, Al Lowman, decided to ”withdraw the book until the playing field is clear.” According to sources, Graham Nash‘s proposed autobiography has been tabled for the same reason. Still to be heard from: Neil Young, whom publishing insiders doubt will ever produce a book, despite a contract he’s had with Villard for years. ”It’s not currently scheduled” was all Random House spokesman Tom Perry would say…. Vintage, the trade paperback arm of Knopf, just paid $1.4 million for the paperback rights to Dave Eggers‘ memoir, A Heartbreaking Work of Staggering Genius. ”It’s a monstrous debut book that manages to be funny, sad, a parody of itself, and a wonderful, unconventional love story, so we’re getting five or six books in one,” says Marty Asher, editor in chief.